10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the Fiscal Year Ended: December 31, 2014

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                     to                     

Commission File Number: 0-27140

NORTHWEST PIPE COMPANY

(Exact name of registrant as specified in its charter)

OREGON	93-0557988
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

5721 SE Columbia Way, Suite 200

Vancouver, WA 98661

(Address of principal executive offices and zip code)

360-397-6250

(Registrant’s telephone number including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class of Stock	Name of Each Exchange on Which Registered
Common Stock, par value $0.01 per share Preferred Stock Purchase Rights	Nasdaq Global Select Market Nasdaq Global Select Market

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  ¨    No  x

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ¨    No  x

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of Registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K, or any amendment to this Form 10-K.  ¨

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of “large accelerated filer”, “accelerated filer”, and “smaller reporting company” in Rule 12b-2 of the Act. (Check one):

Large accelerated filer	¨	Accelerated filer	x
Non-accelerated filer	¨	Smaller reporting company	¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    Yes  ¨    No  x

The aggregate market value of the common equity that was held by non-affiliates of the Registrant was $333,023,765 as of June 30, 2014 based upon the last sales price as reported by Nasdaq.

The number of shares outstanding of the Registrant’s common stock as of March 9, 2015 was 9,554,222 shares.

Documents Incorporated by Reference

The registrant has incorporated into Parts II and III of Form 10-K by reference certain portions of its Proxy Statement for its 2015 Annual Meeting of Shareholders.

NORTHWEST PIPE COMPANY

2014 ANNUAL REPORT ON FORM 10-K

TABLE OF CONTENTS

		Page
Cautionary Statement Regarding Forward-Looking Statements			1
	Part I
Item 1	Business		2
Item 1A	Risk Factors		8
Item 1B	Unresolved Staff Comments		16
Item 2	Properties		17
Item 3	Legal Proceedings		17
Item 4	Mine Safety Disclosures		19
	Part II
Item 5	Market for the Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities		20
Item 6	Selected Financial Data		22
Item 7	Management’s Discussion and Analysis of Financial Condition and Results of Operations		22
Item 7A	Quantitative and Qualitative Disclosures About Market Risk		34
Item 8	Financial Statements and Supplementary Data		35
Item 9	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure		35
Item 9A	Controls and Procedures		35
Item 9B	Other Information		38
	Part III
Item 10	Directors, Executive Officers and Corporate Governance		39
Item 11	Executive Compensation		40
Item 12	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters		40
Item 13	Certain Relationships and Related Transactions, and Director Independence		41
Item 14	Principal Accountant Fees and Services		41
	Part IV
Item 15	Exhibits and Financial Statement Schedule		42

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

Certain statements in this Annual Report on Form 10-K for the year ended December 31, 2014 (the “2014 Form 10-K”), other than purely historical information, are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) that are based on current expectations, estimates and projections about our business, management’s beliefs, and assumptions made by management. Words such as “expects,” “anticipates,” “intends,” “plans,” “believes,” “seeks,” “estimates,” “forecasts,” “should,” and variations of such words and similar expressions are intended to identify such forward-looking statements. These statements are not guarantees of future performance and involve a number of risks and uncertainties that are difficult to predict. Actual outcomes and results may differ materially from the results anticipated in these forward-looking statements as a result of a variety of important factors. While it is impossible to identify all such factors, those that could cause actual results to differ materially from those estimated by us include the important factors discussed in Part I—Item 1A, “Risk Factors.” Such forward-looking statements speak only as of the date they are made and we do not undertake any obligation to update any forward-looking statements to reflect events or circumstances after the date of this 2014 Form 10-K. If we do update one or more forward-looking statements, investors and others should not conclude that we will make additional updates or corrections with respect thereto or with respect to other forward-looking statements.

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PART I

Item 1. Business

Overview

We are a leading North American manufacturer of large diameter, high-pressure steel pipeline systems for use in water infrastructure applications, primarily related to drinking water systems, and we also manufacture other welded steel pipe products for use in a wide range of applications, including energy, construction, agriculture, and industrial uses. Our pipeline systems are also used for hydroelectric power systems, wastewater systems and other applications. In addition, we make products for industrial plant piping systems and certain structural applications. With a history that dates back more than 100 years, we have established a prominent position based on a strong and widely recognized reputation for quality, service and an extensive range of products engineered and manufactured to meet expectations in all categories of performance including highly corrosive environments.

We manufacture water infrastructure steel pipe products through our Water Transmission Group, which in 2014, 2013, and 2012 generated approximately 59%, 63%, and 69%, respectively, of our net sales from continuing operations. The Water Transmission Group produces large diameter, high pressure, engineered welded steel pipe products for use in water transmission applications. With eight Water Transmission manufacturing facilities, we are ideally located to meet North America’s growing needs for water and wastewater infrastructure. We market our water infrastructure products through an internal sales force. Our sales have historically been driven by the need for new water infrastructure, which is based primarily on overall population growth and population movement between regions.

We also manufacture smaller diameter electric resistance welded (“ERW”) steel pipe and other welded steel pipe products through our Tubular Products Group, which in 2014, 2013, and 2012 generated approximately 41%, 37%, and 31%, respectively, of our net sales from continuing operations. Our smaller diameter pipe is used for applications in energy, structural, commercial and industrial uses. We have one Tubular Products manufacturing facility located in Atchison, Kansas and we market our products through an internal sales force.

Recent Business Developments

On March 30, 2014 the Company completed the sale of substantially all of the assets and liabilities associated with the oil country tubular goods (“OCTG”) business conducted by the Company at its manufacturing facilities in Bossier City, Louisiana and Houston, Texas, excluding the real property located in Houston, Texas. These facilities were previously included within the Company’s Tubular Products Group. Total consideration of $42.7 million was paid by the buyer, resulting in a loss on sale of $13.5 million. The calculation of the loss on sale included a write down of $4.4 million of goodwill. Of the proceeds received, $4.3 million was placed in escrow to secure the Company’s indemnification obligations under the purchase agreement, $5.0 million was used to repay capital leases related to and secured by certain assets at the Bossier City, Louisiana manufacturing facility, $1.8 million was used to pay for transaction costs and $1.8 million was used to pay a net working capital adjustment made in September 2014, resulting in net proceeds of $29.8 million received during 2014.

In conjunction with the preparation of the year-end financial statements, the Company determined that the goodwill for its Tubular Products Group was impaired. The Company engaged a consultant to assist in its determination of the implied fair value of its goodwill after estimating the fair value of the Tubular Products Group’s net assets. As a result of that analysis, the entire Tubular Products Group goodwill balance of $16.1 million was written off. The writedown was a result of the worldwide turmoil in the crude oil markets, which became significant in the fourth quarter of 2014.

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Our Industries

Water Transmission. Much of the United States water infrastructure is antiquated and many authorities, including the United States Environmental Protection Agency (the “EPA”), believe the United States water infrastructure is in critical need of updates, repairs or replacements. In its 2011 Drinking Water Infrastructure Needs Survey and Assessment released in June 2013, the EPA estimates the nation will need to spend $384 billion in infrastructure investments by 2030 to continue to provide safe drinking water to the public. The American Society of Civil Engineers has given poor ratings to many aspects of the United States water infrastructure in their 2013 Report Card for America’s Infrastructure. In its most recent Failure to Act study of current infrastructure, the American Society of Civil Engineers estimates there will be an $84 billion funding gap for water and wastewater infrastructure by 2020, and a $144 billion gap by 2040.

Within this market, we focus on large diameter, engineered welded steel pipeline systems utilized in water, energy, structural and plant piping applications. Our core market is the large diameter, high-pressure portion of a water transmission pipeline that is typically at the “upper end” of a pipeline system. This is the portion of the overall water pipeline that generally transports water from the source to a treatment plant or from a treatment plant into the distribution system, rather than the small lines that deliver water directly into households. We believe the addressable market for the products sold by our Water Transmission Group will total approximately $1.4 billion over the next three years.

A combination of population growth, movement to new population centers, dwindling supplies from developed water sources, substantial underinvestment in water infrastructure over the past several decades, and an increasingly stringent regulatory environment are driving demand for water infrastructure projects in the United States. These trends are increasing the need for new water infrastructure as well as the need to upgrade, repair and replace existing water infrastructure. While we believe this offers the potential for increased demand for our water infrastructure products and other products related to water transmission, we also expect current governmental and public water agency budgetary pressures will impact near-term demand.

The primary drivers of growth in new water infrastructure installation are population growth and movement as well as dwindling supplies from developed water sources. According to the United States Census Bureau, the population of the United States will increase by approximately 77 million people between 2015 and 2050. The resulting increase in demand will require substantial new infrastructure, as the existing United States water infrastructure is not equipped to provide water to millions of new residents. In addition, many current water supply sources are in danger of being exhausted. The development of new sources of water at greater distances from population centers will drive the demand for new water transmission lines. Our eight Water Transmission manufacturing facilities are well located to take advantage of the anticipated growth and demand.

Increased public awareness of problems with the quality of drinking water and efficient water usage has resulted in more stringent application of federal and state environmental regulations. The need to comply with these regulations in an environment of heightened public awareness towards water issues is expected to contribute to demand in the water infrastructure industry over the next several years as water systems will need to be installed, upgraded and replaced.

On January 16, 2015, U.S. President Barack Obama announced new initiatives to improve the conditions of the aging water infrastructure, in which he noted that the U.S. needs $600 billion for drinking water and wastewater management over the next 20 years. These initiatives include a new Water Finance Agency at the EPA, a Rural Opportunity Investment Initiative at the U.S. Department of Agriculture, and the proposal to create Qualified Public Infrastructure Bonds to encourage more public private partnerships.

Tubular Products. The tubular products industry encompasses a wide variety of products serving a diverse group of end markets. We have been active in several of these markets, including energy, construction, agricultural, commercial, and industrial systems. With the sale of our OCTG business in March 2014, the segment’s primary product is line pipe, used to connect oil and gas wells to larger diameter pipelines.

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We expect demand from the energy markets to decrease due to the recent decrease in crude oil prices. After trading near $100 per barrel for most of the period since 2011, the price of crude oil started dropping in the summer of 2014 and decreased steeply in the fourth quarter to less than $50 per barrel by January 2015. Natural gas production remained at historically high levels during 2014 according to the United States Energy Information Administration. Of the active oil and natural gas rigs, approximately 22 percent of the rigs are drilling for natural gas and 78 percent are drilling for oil. Rig counts in the United States began to drop in December 2014 and have been on a steady decline since then. We believe demand for energy pipe will be dependent on crude oil prices through 2015. Because line pipe used in the energy sector is the primary product of our Tubular Products Group, we expect this demand to also drive results for this segment.

Products

Water Transmission. Water transmission pipe is used for high-pressure applications, typically requiring pipe to withstand pressures in excess of 150 pounds per square inch. Most of our water transmission products are made to custom specifications for fully engineered, large diameter, high-pressure water infrastructure systems. Other uses include pipe for piling and hydroelectric projects, wastewater treatment plants and other applications. Our primary manufacturing process has the capability to manufacture water transmission pipe in diameters ranging from 12 inches to 156 inches with wall thickness of 0.135 inch to 1.00 inch. We also have the ability to manufacture even larger and heavier pipe with other processes. We can coat and/or line these products with cement mortar, polyethylene tape, polyurethane paints, epoxies, Pritec^®, and coal tar enamel according to our customers’ specifications. We maintain fabrication facilities that provide installation contractors with custom fabricated sections as well as straight pipe sections. We typically deliver a complete pipeline system to the installation contractor.

Tubular Products. Our tubular products range in size from 4.500 inches to 16 inches in diameter with wall thickness from 0.134 inch to 0.375 inch. These products are typically sold to distributors or Original Equipment Manufacturers (“OEMs”) and are used for a wide variety of applications, including energy, construction, agriculture, and other commercial and industrial uses.

Marketing

Water Transmission. The primary customers for water transmission products are installation contractors for projects funded by public water agencies. One customer accounted for 16% of our total Company net sales from continuing operations in 2014, 15% of total net sales from continuing operations in 2013 and 16% of total net sales from continuing operation in 2012. Our plant locations in Oregon, Colorado, California, West Virginia, Texas, Missouri, Utah and Mexico, allow us to efficiently serve customers throughout the United States, as well as Canada and Mexico. Our Water Transmission marketing strategy emphasizes early identification of potential water projects, promotion of specifications consistent with our capabilities and close contact with the project designers and owners throughout the design phase. Our in-house sales force is comprised of sales representatives, engineers and support personnel who work closely with public water agencies, contractors and engineering firms, often years in advance of projects being bid. This allows us to identify and evaluate planned projects at early stages, participate in the engineering and design process, and ultimately promote the advantages of our systems. After an agency completes a design, they publicize the upcoming bid for a water transmission project. We then obtain detailed plans and develop our estimate for the pipe portion of the project. We typically bid to installation contractors who include our bid in their proposals to public water agencies. A public water agency generally awards the entire project to the contractor with the lowest responsive bid.

Tubular Products. Our tubular products are marketed through an in-house sales force and our tubular product manufacturing facility is located in Atchison, Kansas. Our marketing strategy focuses on quality, customer service and customer relationships. Our tubular products are primarily sold to distributors, although to a lesser extent we also sell to OEMs. Our sales effort emphasizes regular personal contact with current and potential customers. We supplement this effort with targeted advertising, brochures and participation in trade shows. One customer of our Tubular Products business accounted for 10% of our total net sales from continuing

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operations in 2014. No customer accounted for more than 10% of our total net sales from continuing operations during 2013 or 2012.

Manufacturing

Water Transmission. Water transmission manufacturing begins with the preparation of engineered drawings of each unique piece of pipe in a project. These drawings are prepared on our proprietary computer-aided design system and are used as blueprints for the manufacture of the pipe. After the drawings are completed and approved, manufacturing begins by feeding steel coil continuously at a specified angle into a spiral weld mill which cold-forms the band into a tubular configuration with a spiral seam. Automated arc welders, positioned on both the inside and the outside of the tube, are used to weld the seam. The welded tube is then cut at the specified length. After completion of the forming and welding phases, the finished cylinder is tested and inspected in accordance with project specifications, which may include 100% radiographic analysis of the weld seam. The cylinders are then coated and lined as specified. Possible coatings include coal tar enamel, polyethylene tape, polyurethane paint, epoxies, Pritec^® and cement mortar. Linings may be cement mortar, polyurethane or epoxies. Following coating and lining, certain pieces may be custom fabricated as required for the project. This process is performed in our fabrication facilities. Upon final inspection, the pipe is prepared for shipment. We ship our products to project sites principally by truck.

Tubular Products. Tubular products are manufactured by an ERW process in diameters ranging from 4.500 inches to 16 inches. This process begins by unrolling and slitting steel coils into narrower bands sized to the circumference of the finished product. Each band is re-coiled and fed into the material handling equipment at the front end of the ERW mill and fed through a series of rolls that cold-form it into a tubular configuration. The resultant tube is welded by high-frequency electric resistance welders. After exiting the mill, the products are straightened, inspected, tested and end-finished. Certain products are coated.

Technology. Advances in technology help us produce high quality products at competitive prices. We have invested in modern welding and inspection equipment to improve both productivity and product quality. With the purchase of Permalok in December 2013, the Company acquired certain technologies with respect to an interlocking pipe joining system that provides an alternate joint solution used for connecting steel pipes.

To stay current with technological developments in the United States and abroad, we participate in trade shows, industry associations, research projects and vendor trials of new products.

Quality Assurance. We have quality management systems in place that assure we consistently provide products that meet or exceed customer and applicable regulatory requirements. All of our quality management systems in the United States are registered by the International Organization for Standardization, or ISO, under a multi-site registration. In addition to ISO qualification, the American Institute of Steel Construction, American Petroleum Institute, American Society for Mechanical Engineers, Factory Mutual, National Sanitation Foundation, and Underwriters Laboratory have certified us for specific products or operations. The Quality Assurance department is responsible for monitoring and measuring characteristics of the product. Inspection capabilities include, but are not limited to, visual, dimensional, liquid penetrant, magnetic particle, hydrostatic, ultrasonic, phased array ultrasonics, real-time imaging enhancement, real-time radioscopic, base material tensile, yield and elongation, sand sieve analysis, coal-tar penetration, concrete compression, lining and coating dry film thickness, adhesion, absorption, guided bend, charpy impact, hardness, metallurgical examinations, chemical analysis, spectrographic analysis and finished product final inspection. Product is not released for shipment to our customers until there is verification that all product requirements have been met.

Product Liability. The manufacturing and use of our products involves a variety of risks. Certain losses may result, or be alleged to result, from defects in our products, thereby subjecting us to claims for damages, including consequential damages. We warrant our products to be free of certain defects for one year. We maintain insurance coverage against potential product liability claims in the amount of $51 million, which we believe to be adequate. Historically, product liability claims against us have not been material. However, there

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can be no assurance that product liability claims exceeding our insurance coverage will not be experienced in the future or that we will be able to maintain such insurance with adequate coverage.

Backlog

Our backlog includes confirmed orders, including the balance of projects in process, and projects for which we have been notified that we are the successful bidder even though a binding agreement has not been executed. Projects for which a binding contract has not been executed could be cancelled. Binding orders received by us may be subject to cancellation or postponement; however, cancellation would generally obligate the customer to pay the costs incurred by us. As of December 31, 2014, the backlog of orders for our Water Transmission Group was approximately $121 million. Binding contracts had been executed for approximately 71% of the Water Transmission backlog as of February 20, 2015. At December 31, 2013, the backlog of orders for our Water Transmission Group was approximately $103 million. Backlog as of any particular date may not be indicative of actual operating results for any fiscal period. There can be no assurance that any amount of backlog ultimately will be realized.

Competition

Water Transmission. We have several regional competitors in the Water Transmission business. Most water transmission projects are competitively bid and price competition is vigorous. Price competition may reduce the gross margin on sales, which may adversely affect overall profitability. Other competitive factors include timely delivery, ability to meet customized specifications and high freight costs which may limit the ability of manufacturers located in other market areas to compete with us. With Water Transmission manufacturing facilities in Oregon, Colorado, California, West Virginia, Texas, Missouri, Utah, and Mexico, we believe we can more effectively compete throughout the United States, Canada and Mexico. Our primary competitor in the Water Transmission business in the western United States and southwestern Canada is National Oilwell Varco, Inc. East of the Rocky Mountains, our primary competition includes: American Cast Iron Pipe Company and U.S. Pipe, which manufacture ductile iron pipe; American Spiral Weld Pipe Company, and Mid America Pipe Fabricating and Supply Inc., which manufacture spiral welded steel pipe; and Hanson Pipe & Precast, which manufactures concrete pressure pipe and spiral welded steel pipe.

No assurance can be given that other new or existing competitors will not establish new facilities or expand capacity within our market areas. New or expanded facilities or new competitors could have a material adverse effect on our ability to capture market share and maintain product pricing.

Tubular Products. The market for tubular products is highly fragmented and diversified with over 100 manufacturers in the United States and a number of foreign-based manufacturers that export such pipe into the United States. Manufacturers compete with one another primarily on the basis of price, quality, established business relationships, customer service and delivery. In some of the sectors within the tubular products industry, competition may be less vigorous due to the existence of a relatively small number of companies with the capabilities to manufacture certain products. In particular, we operate in a variety of different markets that require pipe with lighter wall thickness in relation to diameter than many of our competitors can manufacture. In our markets, we typically compete with TMK Ipsco, Energex Tube, Tex Tube Co., Tenaris, Evraz North America, California Steel Industries Inc., Paragon Industries, Inc., Welspun Tubular, LLC, and Axis Pipe and Tube, Inc., as well as foreign competitors.

Additionally, several companies have announced new plants or the expansion of product lines at existing facilities. New or expanded facilities or new competitors could have a material adverse effect on our ability to capture market share and maintain product pricing.

In recent years, we have faced increased competition from foreign-based manufacturers that export Tubular Products into the United States, resulting in downward pricing pressure and a growth in our inventory balances. Imported steel pipe represents a growing percentage of the line pipe market, and increased volumes of imported

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line pipe products could have a materially adverse affect on our ability to capture market share and maintain product pricing.

In October 2014, a trade case was filed for an investigation of imports of welded API line pipe from Korea and Turkey for possible imposition of anti-dumping and countervailing duties. A preliminary determination is expected in the second quarter of 2015. If anti-dumping or countervailing duties are imposed, we would expect to see a decrease in the competition from these countries.

Raw Materials and Supplies

We purchase hot rolled and galvanized steel coil from both domestic and foreign steel mills. Domestic suppliers include Steel Dynamics, Inc., Nucor Corporation, California Steel Industries, Inc., Evraz North America, and SSAB. Foreign suppliers include Posco America Corporation and BlueScope Steel. We order steel according to our business forecasts for our Tubular Products business. Steel for the Water Transmission business is normally purchased only after a project has been awarded to us. From time to time, we may purchase additional steel when it is available at favorable prices. Purchased steel represents a substantial portion of our cost of sales. The steel industry is highly cyclical in nature and steel prices are influenced by numerous factors beyond our control, including general economic conditions, availability of raw materials, energy costs, import duties, other trade restrictions and currency exchange rates.

We also rely on certain suppliers of coating materials, lining materials and certain custom fabricated items. We have at least two suppliers for most of our raw materials. We believe our relationships with our suppliers are positive and have no indication that we will experience shortages of raw materials or components essential to our production processes or that we will be forced to seek alternative sources of supply. Any shortages of raw materials may result in production delays and costs, which could have a material adverse effect on our financial position, results of operations or cash flows.

Environmental and Occupational Safety and Health Regulation

We are subject to federal, state, local and foreign environmental and occupational safety and health laws and regulations, violation of which could lead to fines, penalties, other civil sanctions or criminal sanctions. These environmental laws and regulations govern emissions to air; discharges to water (including stormwater); and the generation, handling, storage, transportation, treatment and disposal of waste materials. We operate under numerous governmental permits and licenses relating to air emissions, stormwater run-off and other environmental matters, and we are also subject to environmental laws requiring the investigation and cleanup of environmental contamination at properties we presently own or operate and at third-party disposal or treatment facilities to which these sites send or arrange to send hazardous waste. For example, we have been identified as a potentially responsible party at the Portland Harbor Site discussed in Part 1—Item 3, “Legal Proceedings” of this 2014 Form 10-K. We believe we are in material compliance with these laws and regulations and do not currently believe that future compliance with such laws and regulations will have a material adverse effect on our financial position, results of operations or cash flows.

Based on our assessment of potential liability, we have no reserves for environmental investigations and cleanup. However, estimating liabilities for environmental investigations and cleanup is complex and dependent upon a number of factors beyond our control which may change dramatically. Accordingly, although we believe maintaining no reserve is appropriate based on current information, we cannot provide assurance that our future environmental investigation and cleanup costs and liabilities will not result in a material expense.

Employees

As of February 13, 2015, we had approximately 943 full-time employees. Approximately 31% were salaried and approximately 69% were employed on an hourly basis. A union represents all of the hourly employees at our

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Monterrey, Mexico facility. All other employees are non-union. We consider our relations with our employees to be good.

Geographic Information

The Company sold principally all products in the United States, Canada and Mexico. As of December 31, 2014, all material long-lived assets are located in the United States. See Note 16 to the consolidated financial statements in Part II—Item 8. “Financial Statements and Schedules” of this 2014 Form 10-K.

Executive Officers of the Registrant

Information regarding the Company’s executive officers is set forth under the caption “Directors, Executive Officers and Corporate Governance” in Part III—Item 10 of this 2014 Form 10-K and is incorporated herein by reference.

Available Information

Our internet website address is www.nwpipe.com. Our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13 or 15(d) of the Exchange Act are available through our internet website as soon as reasonably practicable after we electronically file such material with, or furnish it to, the Securities and Exchange Commission (“SEC”). All statements made in any of our securities filings, including all forward-looking statements or information, are made as of the date of the document in which the statement is included, and we do not assume or undertake any obligation to update any of those statements or documents unless we are required to do so by law. Our internet website and the information contained therein or connected thereto are not incorporated into this 2014 Form 10-K.

Additionally, the public may read and copy any materials we file with the SEC at the SEC’s Public Reference Room at 100 F Street, NE, Washington D.C. 20549. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC also maintains an Internet site that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC at www.sec.gov.

Item 1A. Risk Factors

You should carefully consider the following factors, together with all the other information included in this 2014 Form 10-K, in evaluating our Company and our business. If any of the following risks actually occur, our business, financial condition, results of operations, or cash flows could be materially and adversely affected, and the value of our stock could decline. The risks and uncertainties described below are those that we currently believe may materially affect our Company. Additional risks and uncertainties not presently known to us or that we currently deem immaterial also may impair our business operations. As such, you should not consider this list to be a complete statement of all potential risks or uncertainties.

Risks Related to our Business

Our exposure to the energy market represents a significant portion of our Tubular Products business. Our line pipe products, which serve the energy market, comprise 77%, 71%, and 60% of our tons sold in 2014, 2013, and 2012, respectively, for our continuing operations in the Tubular Products Group. Sales of these products are tied to the exploration, development, and production of natural gas and oil reserves. Factors affecting the profitability of exploration and production of hydrocarbons, such as the price of oil and gas, will have an effect on the market for energy pipe products.

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Crude oil prices declined significantly in the fourth quarter of 2014 and have remained near those levels in the first part of 2015. This has led to several announcements by oil and gas exploration and production companies that they are significantly reducing activity. These and further declines in the levels of exploration and production activity could adversely affect our business, financial position, results of operations, or cash flows.

Increased levels of imports have and could continue to adversely affect pricing and demand for our products. We believe import levels are affected by, among other things, overall worldwide demand, lower cost of production in other countries, the trade practices of foreign governments, government subsidies to foreign producers and governmentally imposed trade restrictions in the United States. Although certain imported steel products from China have been curtailed by anti-dumping duties, imported line pipe products from other countries have increased, notably from Korea and Turkey, which continue to command significant market share. The level of imports of tubular products has historically impacted the domestic tubular products market and is currently reducing the demand for our energy products. Increased imports in the United States and Canada which compete with our other tubular product and water transmission products could reduce demand for our products in the future and adversely affect our business, financial position, results of operations or cash flows.

Our Tubular Products business is facing intense competition from other North American suppliers. With the increase in energy pipe demand over the last several years, there have been significant increases in available capacity in North America. Approximately 2.7 million tons of tubular pipe capacity has been added in the last few years. Approximately 1.6 million tons of this additional tubular pipe capacity is still currently under construction. Energy tubular products generally include OCTG and line pipe. While OCTG producers can usually also produce line pipe, line pipe producers generally cannot produce OCTG. The significant pressure in energy tubular products could cause some OCTG producers to enter the line pipe markets. Increased domestic capacity and production in the United States and Canada could adversely affect our business, financial position, results of operations or cash flows.

A downturn in government spending related to public water transmission projects would adversely affect our business. Our Water Transmission business accounted for approximately 59% of our net sales from continuing operations in 2014. Our Water Transmission business is primarily dependent upon spending on public water transmission projects, including water infrastructure upgrades, repairs and replacement and new water infrastructure spending, which, in turn, depends on, among other things:

• the need for new or replacement infrastructure;

• the priorities placed on various projects by governmental entities;

• federal, state and local government spending levels, including budgetary constraints related to capital projects and the ability to obtain financing; and

• the ability of governmental entities to obtain environmental approvals, right-of-way permits and other required approvals and permits.

Decreases in the number of, or government funding of, public water transmission projects would adversely affect our business, financial position, results of operations, or cash flows.

Our Water Transmission business faces competition from other steel pipe manufacturers as well as concrete, ductile iron, polyvinyl chloride (“PVC”) and high density polyethylene (“HDPE”) pipe manufacturers. Orders in the Water Transmission business are competitively bid, and price competition can be vigorous. Price competition may reduce the gross margin on sales, which may adversely affect overall profitability. Other competitive factors include timely delivery, ability to meet customized specifications and high freight costs. Although our Water Transmission manufacturing facilities in Oregon, Colorado, California, West Virginia, Texas, Missouri, Utah, and Mexico allow us to compete throughout the United States, Canada and Mexico, we cannot assure you that new or existing competitors will not establish new facilities or expand capacity within our market areas. New or expanded facilities or new competitors could have a material adverse effect on our market share and product pricing in our Water Transmission business.

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Water transmission pipe is manufactured generally from steel, concrete, HDPE, PVC or ductile iron. Each pipe material has advantages and disadvantages. Steel and concrete are more common materials for larger diameter water transmission pipelines because ductile iron pipe generally is limited in diameter due to the manufacturing process. The public agencies and engineers who determine the specifications for water transmission projects analyze these pipe materials for suitability for each project. Individual project circumstances normally dictate the preferred material. If we experience cost increases in raw materials, labor and overhead specific to our industry or the location of our facilities, while competing products or companies do not experience similar changes, we could experience an adverse change in the demand, price and profitability of our products, which could have a material adverse effect on our business, financial position, results of operations or cash flows.

We may be unable to develop or successfully market new products or our products might not obtain necessary approvals or achieve market acceptance, which could adversely affect our growth. We will continue to actively seek to develop new products and to expand our existing products into new markets, but we cannot assure you that we will be successful in these efforts. If we are unsuccessful in developing and marketing new products, expanding into new markets, or we do not obtain or maintain requisite approvals for our products, the demand for our products could be adversely affected, which could affect our business, financial position, results of operations or cash flows.

The success of our business is affected by general economic conditions, and our business may be adversely affected by an economic slowdown or recession. Periods of economic slowdown or recession in the United States, or the public perception that one may occur, have and could further decrease the demand for our products, affect the price of our products and adversely impact our business. We have been impacted in the past by the general slowing of the economy, and the economic slowdown has had an adverse impact on our business, financial position, results of operations or cash flows. In particular, our Tubular Products Group is exposed to the energy exploration, non-residential construction, and agriculture markets, and a significant downturn in any one of these markets could cause a reduction in our revenues that could be difficult to offset.

Project delays in public water transmission projects could adversely affect our business. The public water agencies constructing water transmission projects generally announce the projects well in advance of the bidding and construction process. It is not unusual for projects to be delayed and rescheduled. Projects are delayed and rescheduled for a number of reasons, including changes in project priorities, difficulties in complying with environmental and other government regulations and additional time required to acquire rights-of-way or property rights. Delays in public water transmission projects may occur with too little notice to allow us to replace those projects in our manufacturing schedules. As a result, our business, financial position, results of operations or cash flows may be adversely affected by unplanned downtime.

Fluctuations in steel prices may affect our future results of operations. Purchased steel represents a substantial portion of our cost of sales, particularly in our Tubular Products business. The steel industry is highly cyclical in nature, and, at times, pricing can be highly volatile due to a number of factors beyond our control, including general economic conditions, import duties, other trade restrictions and currency exchange rates. Over the past three years, steel prices have fluctuated significantly. Our cost for a ton of steel from continuing operations was approximately $746 per ton in 2014, $707 per ton in 2013, and $738 per ton in 2012. In 2014, our monthly average steel purchasing costs ranged from a high of approximately $779 per ton to a low of approximately $708 per ton. This volatility can significantly affect our gross profit. Although we seek to recover increases in steel prices through price increases in our products, we have not always been successful. Any increase in steel prices that is not offset by an increase in our prices could have an adverse effect on our business, financial position, results of operations or cash flows.

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Operating problems in our business could adversely affect our business, financial position, results of operations or cash flows. Our manufacturing operations are subject to typical hazards and risks relating to the manufacture of similar products such as:

• explosions, fires, inclement weather and natural disasters;

• mechanical failure;

• unscheduled downtime;

• labor difficulties;

• loss of process control and quality;

• disruptions to supply;

• raw materials quality defects;

• service provider delays or failures;

• transportation delays or failures;

• an inability to obtain or maintain required licenses or permits; and

• environmental hazards such as chemical spills, discharges or releases of toxic or hazardous substances or gases into the environment or workplace.

The occurrence of any of these operating problems at our facilities may have a material adverse effect on the productivity and profitability of a particular manufacturing facility or on our operations as a whole, during and after the period of these operating difficulties. These operating problems may also cause personal injury and loss of life, severe damage to or destruction of property and equipment, and environmental damage. In addition, individuals could seek damages for alleged personal injury or property damage. Furthermore, we could be subject to present and future claims with respect to workplace injury, exposure to hazardous materials, workers’ compensation and other matters. Although we maintain property and casualty insurance of the types and in the amounts that we believe are customary for our industries, we cannot assure you that our insurance coverage will be adequate for liability that may be ultimately incurred or that such coverage will continue to be available to us on commercially reasonable terms. Any claims that result in liability exceeding our insurance coverage could have an adverse effect on our business, financial position, results of operations or cash flows.

Our quarterly results of operations are subject to significant fluctuation. Our net sales and operating results may fluctuate significantly from quarter to quarter due to a number of factors, including:

• the commencement, completion or termination of contracts during any particular quarter;

• unplanned down time due to project delays or mechanical failure;

• underutilized capacity or factory productivity;

• the seasonal variation in demand for tubular products;

• adverse weather conditions;

• fluctuations in the cost of steel and other raw materials; and

• competitive pressures.

Results of operations in any period are not indicative of results for any future period, and comparisons between any two periods may not be meaningful.

We face risks in connection with potential acquisitions and divestitures. Acquiring businesses that expand and/or complement our operations has been an important element of our business strategy, and we

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continue to evaluate potential acquisitions that may expand and/or complement our business. We may not be able to successfully identify attractive acquisition candidates or negotiate favorable terms in the future. Furthermore, our ability to effectively integrate any future acquisitions will depend on, among other things, the adequacy of our implementation plans, the ability of our management to oversee and operate effectively the combined operations and our ability to achieve desired operational efficiencies. We may also consider other alternatives for our business units in order to strategically position our business and continue to compete in our markets, which may include joint-ventures and/or divestitures. Our failure to successfully integrate the operations of any businesses that we may acquire in the future or our inability to attract a business partner in which to enter into a joint-venture or a buyer willing to purchase our business units may adversely affect our business, financial position, results of operations or cash flows.

We had net sales of greater than 10% of total net sales from continuing operations from each of two customers in 2014 and one customer in both 2013 and 2012. The loss of these customers or a significant reduction in their purchases could adversely affect our business, financial position, results of operations or cash flows.

We may be subject to claims for damages for defective products, which could adversely affect our business, financial position, results of operations or cash flows. We warrant our products to be free of certain defects. We have, from time to time, had claims alleging defects in our products. We cannot assure you that we will not experience material product liability losses in the future or that we will not incur significant costs to defend such claims. While we currently have product liability insurance, we cannot assure you that our product liability insurance coverage will be adequate for liabilities that may be incurred in the future or that such coverage will continue to be available to us on commercially reasonable terms. Any claims relating to defective products that result in liabilities exceeding our insurance coverage could have an adverse effect on our business, financial position, results of operations or cash flows.

We may not be able to recover costs and damages from vendors that supply defective materials. We may receive defective materials from our vendors that are incorporated into our products during the manufacturing process. The cost to repair, remake or replace defective products could be greater than the amount that can be recovered from the vendor. Such excess costs could have an adverse effect on our business, financial position, results of operations or cash flows.

We have a foreign operation which exposes us to the risks of doing business abroad. Our facility in Monterrey, Mexico primarily exports products to the United States. We may operate in additional countries in the future. Any material changes in the quotas, regulations or duties on imports imposed by the United States government and our agencies or on exports imposed by these foreign governments and their agencies could adversely affect our foreign operations.

We also sell some of our products internationally. Our foreign activities are also subject to various other risks of doing business in a foreign country, including:

• currency fluctuations;

• transportation delays and interruptions;

• political, social and economic instability and disruptions;

• government embargoes or foreign trade restrictions;

• the imposition of duties, tariffs and other trade barriers;

• import and export controls;

• labor unrest and current and changing regulatory environments;

• limitations on our ability to enforce legal rights and remedies; and

• potentially adverse tax consequences.

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No assurance can be given that our operations may not be adversely affected in the future. Any of these events could have an adverse effect on our operations in the future by reducing the demand for our products and services, decreasing the prices at which we can sell our products or increasing costs such that there would be an adverse effect on our business, financial position, results of operations or cash flows. We cannot assure you that we will continue to operate in compliance with applicable customs, currency exchange control regulations, transfer pricing regulations or any other laws or regulations to which we may be subject, or that any such regulations or laws will not be modified. Any failure by us to comply with any such applicable regulations or laws, or any changes in any such regulations or laws could have a material adverse effect on our business, financial position, results of operations or cash flows.

Our use of the percentage-of-completion method of accounting includes estimates. Revenue from construction contracts in our Water Transmission segment is recognized on the percentage-of-completion method, measured by the costs incurred to date as a percentage of the estimated total costs of each contract (the cost-to-cost method). Estimated total costs of each contract are reviewed on a monthly basis by project management and operations personnel for all active projects. All cost revisions that result in the gross profit as a percent of sales increasing or decreasing by more than two percent are reviewed by senior management personnel.

The use of estimated cost to complete each contract is a significant variable in the process of determining income earned and is a significant factor in the accounting for contracts. The cumulative impact of revisions in total cost estimates during the progress of work is reflected in the period in which these changes become known. Due to the variability of events affecting our estimates which have a material impact on our contract accounting, actual results could differ from those estimates, which could adversely affect our financial position, results of operations or cash flows.

Our Water Transmission backlog is subject to reduction and cancellation. Backlog represents products or services that our customers have committed to purchase from us and projects for which we have been notified that we are the successful bidder even though a binding agreement has not been executed. Projects for which a binding contract has not been executed could be cancelled. Our backlog of orders for our Water Transmission segment was approximately $121 million at December 31, 2014. Our backlog is subject to fluctuations; moreover, cancellations of purchase orders, change orders on contracts, or reductions of product quantities could materially reduce our backlog and, consequently, future revenues. Our failure to replace canceled or reduced backlog could result in lower revenues, which could adversely affect our business, financial position, results of operations or cash flows.

We are subject to stringent environmental and health and safety laws, which may require us to incur substantial compliance and remediation costs, thereby reducing our profits. We are subject to many federal, state, local and foreign environmental and health and safety laws and regulations, particularly with respect to the use, handling, treatment, storage, discharge and disposal of substances and hazardous wastes used or generated in our manufacturing processes. Compliance with these laws and regulations is a significant factor in our business. We have incurred, and expect to continue to incur, significant expenditures to comply with applicable environmental laws and regulations. Our failure to comply with applicable environmental laws and regulations and permit requirements could result in civil or criminal fines or penalties or enforcement actions, including regulatory or judicial orders enjoining or curtailing operations or requiring corrective measures, installation of pollution control equipment or remedial actions.

We are currently, and may in the future be, required to incur costs relating to the environmental assessment or environmental remediation of our property, and for addressing environmental conditions, including, but not limited to, the issues associated with our Portland, Oregon facility as discussed in Part I—Item 3, “Legal Proceedings” below. Some environmental laws and regulations impose liability and responsibility on present and former owners, operators or users of facilities and sites for contamination at such facilities and sites without

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regard to causation or knowledge of contamination. Consequently, we cannot assure you that existing or future circumstances, the development of new facts or the failure of third parties to address contamination at current or former facilities or properties will not require significant expenditures by us.

We expect to continue to be subject to increasingly stringent environmental and health and safety laws and regulations. It is difficult to predict the future interpretation and development of environmental and health and safety laws and regulations or their impact on our future earnings and operations. We anticipate that compliance will continue to require capital expenditures and operating costs. Any increase in these costs, or unanticipated liabilities arising, for example, out of discovery of previously unknown conditions or more aggressive enforcement actions, could adversely affect our results of operations, and there is no assurance that they will not have a material adverse effect on our business, financial position, results of operations or cash flows.

Our information technology systems can be negatively affected by cyber security threats. Increased global information technology security requirements, vulnerabilities, threats and a rise in sophisticated and targeted computer crime pose a risk to the security of our systems, networks and the confidentiality, availability and integrity of our data. Despite our efforts to protect sensitive information and confidential and personal data, our facilities and systems and those of our third-party service providers may be vulnerable to security breaches. This could lead to disclosure, modification or destruction of proprietary, employee, and other key information, and operational disruptions, which in turn could adversely affect our reputation, competitiveness and results of operations.

Risks Related to Our Financial Condition

Our significant debt obligations and the restrictions under which we operate as a result of our debt obligations could have a material adverse effect on our business, financial condition, results of operations or cash flows. We have financed our operations through cash flows from operations, available borrowings and other financing arrangements. As of December 31, 2014, we had approximately $48.0 million of outstanding debt and capital lease obligations.

Our debt and our debt service obligations could:

• limit our ability to obtain additional financing for working capital or other purposes in the future;

• reduce the amount of funds available to finance our operations, capital expenditures and other activities;

• increase our vulnerability to economic downturns, illiquid capital markets, and adverse industry conditions;

• limit our flexibility in responding to changing business and economic conditions, including increased competition;

• place us at a disadvantage when compared to our competitors that have less debt; and

• with respect to our borrowings that bear interest at variable rates, cause us to be vulnerable to increases in interest rates.

Our ability to make scheduled payments on our debt will depend on our future operating performance and cash flows, which are subject to prevailing economic conditions, prevailing interest rate levels and other financial, competitive and business factors, many of which are beyond our control. Our inability to make scheduled payments on our debt or any of the foregoing factors would have a material adverse effect on our business, financial condition, results of operations, or cash flows.

We will need to substantially increase working capital if market conditions and customer order levels improve. If market conditions and customer order levels improve, we will have to increase our working capital

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substantially, as it will take several months for new orders to be translated into cash receipts. In general, availability under our Credit Agreement while remaining in compliance with our financial covenants is limited to $61.7 million as of December 31, 2014. We may not have sufficient availability under this agreement to borrow the amounts we need, and other opportunities to borrow additional funds or raise capital in the equity markets may be limited or nonexistent. A shortage in the availability of working capital would have a material adverse effect on our business, financial condition, results of operations, or cash flows.

Our failure to comply with covenants in our debt instruments could result in our indebtedness being immediately due and payable, which would have a material adverse effect on our business, financial condition, results of operations or cash flows. The agreements governing our outstanding debt include financial and other restrictive covenants that impose certain requirements with respect to our financial condition and results of operations and general business activities. These covenants require us to maintain certain financial ratios and place restrictions on, among other things, our ability to incur certain additional debt and to create liens or other encumbrances on assets.

Our ability to comply with the financial and other covenants under our debt instruments in the future is uncertain and will be affected by our results of operations and financial condition as well as other events and circumstances beyond our control. If market and other economic conditions do not improve, our ability to comply with these covenants may be impaired. A failure to comply with the requirements of these covenants, if not waived or cured, could permit acceleration of the related debt. If any of our debt is accelerated, we cannot assure you that we would have sufficient assets to repay such debt or that we would be able to refinance such debt on commercially reasonable terms or at all. The acceleration of a significant portion of our debt would have a material adverse effect on our business, financial condition, results of operations, or cash flows.

Disruptions in the financial markets and the general economic slowdown could cause us to be unable to obtain financing and expose us to risks related to the overall macro-economic environment, which could have a material adverse effect on our business, financial condition, results of operations or cash flows. The United States equity and credit markets have experienced significant price volatility, dislocations and liquidity disruptions, which have caused market prices of many equities to fluctuate substantially and the spreads on prospective debt financings to widen considerably. These circumstances have materially impacted liquidity in the financial markets, making terms for certain financings less attractive, and in some cases have resulted in the unavailability of financing, even for companies who are otherwise qualified to obtain financing. These events may make it less likely that we will be able to obtain additional financing and also may make it more difficult or prohibitively costly for us to raise capital through the issuance of debt or equity securities.

Risks Related to Our Internal Control Over Financial Reporting

We have identified material weaknesses in internal control in prior years. For the year ended December 31, 2013, a material weakness in our internal control over financial reporting related to goodwill was identified. A “material weakness” is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of our annual or interim consolidated financial statements would not be prevented or detected. This material weakness has not been remediated as of December 31, 2014. No additional material weaknesses were identified as of December 31, 2014. However, we cannot assure you that additional material weaknesses in our internal control over financial reporting will not be identified in the future. Any failure to maintain or implement required new or improved controls, or any difficulties we encounter in their implementation, could result in additional material weaknesses, or could result in material misstatements in our financial statements. These misstatements could result in a restatement of financial statements, cause us to fail to meet our reporting obligations or cause investors to lose confidence in our reported financial information, leading to a decline in our stock price.

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Risks Related to Our Common Stock

The relatively low trading volume of our common stock may limit your ability to sell your shares. Although our shares of common stock are listed on the Nasdaq Global Select Market (“Nasdaq”), we have historically experienced a relatively low trading volume. If we have a low trading volume in the future, holders of our shares may have difficulty selling a large number of shares of our common stock in the manner or at a price that might otherwise be attainable.

The market price of our common stock could be subject to significant fluctuations. The market price of our common stock has experienced, and may continue to experience, significant volatility. Among the factors that could affect our stock price are:

• our operating and financial performance and prospects;

• quarterly variations in the rate of growth of our financial indicators, such as earnings per share, net income and net sales;

• changes in revenue or earnings estimates or publication of research reports by analysts;

• loss of any member of our senior management team;

• speculation in the press or investment community;

• strategic actions by us or our competitors, such as acquisitions or restructuring;

• sales of our common stock by shareholders;

• relatively low trading volume;

• general market conditions and market expectations for our industry and the financial health of our customers; and

• domestic and international economic, legal and regulatory factors unrelated to our performance.

The stock markets in general have experienced broad fluctuations that have often been unrelated to the operating performance of particular companies. These broad market fluctuations may adversely affect the trading price of our common stock.

Certain provisions of our governing documents and Oregon law could discourage potential acquisition proposals. Our articles of incorporation contain provisions that:

• classify the board of directors into three classes, each of which serves for a three-year term with one class elected each year;

• provide that directors may be removed by shareholders only for cause and only upon the affirmative vote of 75% of the outstanding shares of common stock; and

• permit the board of directors to issue preferred stock in one or more series, fix the number of shares constituting any such series and determine the voting powers and all other rights and preferences of any such series, without any further vote or action by our shareholders.

In addition, we are subject to the Oregon Business Combination Act, which imposes certain restrictions on business combination transactions and may encourage parties interested in acquiring us to negotiate in advance with our board of directors. We also have a shareholder rights plan that acts to discourage any person or group from making a tender offer for, or acquiring, more than 15% of our common stock without the approval of our board of directors. Any of these provisions could discourage potential acquisition proposals, could deter, delay or prevent a change in control that our shareholders consider favorable and could depress the market value of our common stock.

Item 1B. Unresolved Staff Comments

None.

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Item 2. Properties

Properties

The following table provides certain information about our nine operating facilities as of December 31, 2014:

Location	Manufacturing Space (approx. sq. ft.)		Property Size (approx. acres)		Products	Number and Type of Mills
Portland, Oregon		300,000		25	Water transmission	3 Spiral mills
Atchison, Kansas		106,000		60	Tubular products	2 Electric resistance mills
Adelanto, California		200,000		100	Water transmission	3 Spiral mills, 1 Plate roll
Denver, Colorado		182,000		40	Water transmission	2 Spiral mills
Parkersburg, West Virginia		145,000		90	Water transmission	2 Spiral mills
Saginaw, Texas (2 facilities)		170,000		50	Water transmission	2 Spiral mills
Monterrey, Mexico		40,000		5	Water transmission	Multiple line fabrication capability
St Louis, Missouri		100,000		20	Water transmission	2 Plate rolls
Salt Lake City, Utah		47,000		1	Water transmission	2 Plate rolls

As of December 31, 2014, we owned all of our facilities except for one of our Saginaw, Texas facilities, property adjacent to our Oregon facility, our St. Louis facility, and our Salt Lake City facility, which are leased.

Our facilities serve regional markets, which vary in the number and sizes of projects year-over-year. Consequently, we have excess manufacturing capacity from time to time at each of our facilities. We believe the quality and productive capacity of our facilities are sufficient to maintain our competitive position for the foreseeable future.

Item 3. Legal Proceedings

Portland Harbor Superfund

On December 1, 2000, a section of the lower Willamette River known as the Portland Harbor Site was included on the National Priorities List at the request of the United States Environmental Protection Agency (the “EPA”). While the Company’s Portland, Oregon manufacturing facility does not border the Willamette River, an outfall from the facility’s stormwater system drains into a neighboring property’s privately owned stormwater system and slip. Since the listing of the site, the Company was notified by the EPA and the Oregon Department of Environmental Quality (“ODEQ”) of potential liability under the Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”). In 2008, the Company was asked to file information disclosure reports with the EPA (CERCLA 104 (e) information request). By agreement with the EPA, ODEQ is responsible for overseeing remedial investigation and source control activities for all upland sites to investigate sources and prevent future contamination to the river. A remedial investigation and feasibility study (“RI/FS”) of the Portland Harbor Site has been directed by a group of 14 potentially responsible parties known as the Lower Willamette Group (the “LWG”) under agreement with the EPA. The Company made a payment of $0.2 million to the LWG in June 2007 as part of an interim settlement, and is under no obligation to make any further payment. The final draft remedial investigation (“RI”) was submitted to the EPA by the LWG in fall of 2011 and the draft feasibility study (“FS”) was submitted by the LWG to the EPA in March 2012. The draft FS identifies ten possible remedial alternatives which range in estimated cost from approximately $169 million to $1.76 billion and estimates a range of two to 28 years to implement the remedial work, depending on the selected alternative. The report does not determine who is responsible for the costs of cleanup or how the cleanup costs will be allocated among the potentially responsible parties. As of the date of this filing, the final RI and the revised FS are pending approval of the EPA.

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In 2001, groundwater containing elevated volatile organic compounds (“VOCs”) was identified in one localized area of leased property adjacent to the Portland facility furthest from the river. Assessment work in 2002 and 2003 to further characterize the groundwater was consistent with the initial conclusion that the source of the VOCs is located off of Company-owned property. In February 2005, the Company entered into a Voluntary Agreement for Remedial Investigation and Source Control Measures (the “Agreement”) with ODEQ. The Company is one of many Upland Source Control Sites working with ODEQ on Source Control and is considered a “medium” priority site by ODEQ indicating more investigation was recommended. The Company performed RI work required under the Agreement and submitted a draft RI/Source Control Evaluation Report (“SCE”) in December 2005 and a revised draft RI/SCE Report in January 2014 (2014 RI/SCE Report). The conclusions of the report include: (1) the VOCs found in the groundwater do not present an unacceptable risk to human or ecological receptors in the Willamette River; (2) there is no evidence at this time showing a connection between detected VOCs in groundwater and Willamette River sediments; (3) the interim remedial measure to conduct a limited excavation of soil and complete paving the site was completed; (4) a state-of-the art stormwater treatment system was installed; and (5) an area of stained soil was characterized and remediated.

During the localized soil excavation in 2011, additional stained soil was discovered. At the request of ODEQ, the Company developed an additional Work Plan to characterize the nature and extent of soil and/or groundwater impacts from the staining. The Company began implementing this Work Plan in the second quarter of 2012 and submitted sampling results to ODEQ in the third quarter of 2012. Comments from ODEQ were received in November 2012. In February 2013, ODEQ clarified its comments from November 2012, and the Company completed its second round of groundwater sampling for the Stained Soil Investigation Area in May and November 2013. The results were reported to ODEQ in January 2014 in the RI/SCE Report. Comments were received from ODEQ in June 2014 and will be addressed in a revised report.

The Company spent $0.1 million for further Source Control work in 2014, and less than $0.1 million in 2013.

Concurrent with the activities of the EPA and ODEQ, the Portland Harbor Natural Resources Trustee Council (“Trustees”) sent some or all of the same parties, including the Company, a notice of intent to perform a Natural Resource Damage Assessment (“NRDA”) for the Portland Harbor Site to determine the nature and extent of natural resource damages under CERCLA section 107. The Trustees for the Portland Harbor Site consist of representatives from several Northwest Indian Tribes, three federal agencies and one state agency. The Trustees act independently of the EPA and ODEQ. The Trustees have encouraged potentially responsible parties to voluntarily participate in the funding of their injury assessments and several of those parties have agreed to do so. In June 2014, the Company agreed to participate in the injury assessment process, which included funding $0.4 million of the assessment; of this amount, $0.2 million was paid in July 2014 and the remainder was paid in January 2015. The Company has not assumed any additional payment obligations or liabilities with the participation with the NRDA.

The Company’s potential liability is a portion of the costs of the remedy the EPA will select for the entire Portland Harbor Site. The cost of that remedy is expected to be allocated among more than 100 potentially responsible parties. Because of the large number of responsible parties and the variability in the range of remediation alternatives, the Company is unable to estimate an amount or an amount within a range of costs for its obligation with respect to the Portland Harbor Site matters, and no further adjustment to the consolidated financial statements has been recorded as of the date of this filing. The Company has insurance policies for defense costs, as well as indemnification policies it believes will provide reimbursement for any share of the remediation assessed. However, the Company can provide no assurance that those policies will cover all of the costs which the Company may incur.

In December 2014, a federal district court approved settlements between the Company and two of its insurance carriers. The Company released its interests in the related insurance policies, and received $2.6 million in January 2015 for reimbursement of past indemnification and defense costs incurred by the Company associated with the Portland Harbor Site. As of December 31, 2014, $2.6 million was included in trade and other

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receivables. Notwithstanding these settlements, the Company continues to have insurance coverage for indemnification and defense costs related to Portland Harbor Site as described above.

Houston Environmental Cleanup

In connection with the Company’s sale of its OCTG business, a Limited Phase II Environmental Site Assessment was conducted at the Houston, Texas plant and completed in March 2014, which revealed the presence of VOCs in the groundwater and certain metals in the soil. In June 2014, the Company was admitted into the Texas Commission on Environmental Quality (“TCEQ”) Voluntary Cleanup Program to address these issues and obtain a Certificate of Completion from TCEQ. The cost of any potential cleanup will not be covered by insurance. However, any costs incurred will be reimbursed by the purchaser of the OCTG business discussed in Note 1, “Summary of Significant Accounting Policies – Business Acquisitions and Disposals” if the purchaser of the OCTG business exercises its option to purchase the property under certain circumstances after the Certificate of Completion is obtained. As the Company is in the early stages of this process, no adjustment to the consolidated financial statements has been recorded as of the date of this filing. We expect to be able to estimate the potential costs by mid-2015.

All Sites

The Company operates its facilities under numerous governmental permits and licenses relating to air emissions, storm water run-off, and other environmental matters. The Company’s operations are also governed by many other laws and regulations, including those relating to workplace safety and worker health, principally the Occupational Safety and Health Act and regulations there under which, among other requirements, establish noise and dust standards. The Company believes it is in material compliance with its permits and licenses and these laws and regulations, and the Company does not believe that future compliance with such laws and regulations will have a material adverse effect on its financial position, results of operations or cash flows.

From time to time, the Company is involved in litigation relating to claims arising out of its operations in the normal course of its business. The Company maintains insurance coverage against potential claims in amounts that are believed to be adequate. To the extent that insurance does not cover legal, defense, and indemnification costs associated with a loss contingency, such costs will be expensed as incurred. The Company believes that it is not presently a party to any other litigation, the outcome of which would have a material adverse effect on its business, financial condition, results of operations or cash flows.

Item 4. Mine Safety Disclosures

Not applicable.

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PART II

Item 5. Market for the Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Market Information

Our common stock is quoted on the Nasdaq under the symbol “NWPX.” The price range per share of common stock presented below represents the highest and lowest closing sales prices for the Company’s common stock on the Nasdaq during each quarter of the two most recent years.

	Low		High
2014
First Quarter	$	33.12	$	37.97
Second Quarter		33.96		40.33
Third Quarter		34.10		40.92
Fourth Quarter		26.77		35.78
2013
First Quarter	$	22.96	$	29.32
Second Quarter		25.11		28.08
Third Quarter		27.83		32.88
Fourth Quarter		31.58		39.32

There were 44 shareholders of record at February 24, 2015. A substantially greater number of holders of our common stock are beneficial holders, whose shares of record are held by banks, brokers, and other financial institutions. There were no cash dividends declared or paid in fiscal years 2014 or 2013, and we do not intend to pay cash dividends in the foreseeable future. We have not issued any securities during the past 3 years that were not registered under the Securities Act.

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Stock Performance Graph

The following graph compares the performance of our common stock to the performance of the Russell 2000 Index and a weighted composite index of certain peer companies (the “Peer Group”) selected by us. The Russell 2000 Index measures the performance of the small-cap segment of the U.S. equity markets. The Peer Group is comprised of Mueller Water Products, Lindsay Corporation and Valmont Industries, Inc.

The comparisons in the chart below are provided in response to SEC disclosure requirements and, therefore, are not intended to forecast or be indicative of future performance of our common stock.

	Indexed Return
	Northwest Pipe Company		Russell 2000 Index		Peer Group
December 31, 2009		100.00		100.00		100.00
December 31, 2010		89.46		126.86		111.66
December 31, 2011		85.11		121.56		104.51
December 31, 2012		88.83		141.43		166.77
December 31, 2013		140.58		196.34		197.04
December 31, 2014		112.14		205.95		186.37

Securities Authorized for Issuance under Equity Compensation Plans

The information with respect to equity compensation plans is included under Part III—Item 12, “Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters” of this 2014 Form 10-K.

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Item 6. Selected Financial Data

The following tables include selected summary financial data for each of our last five years and should be read in conjunction with Part II—Item 8, “Financial Statements and Supplementary Data,” and Part II—Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in this 2014 Form 10-K.

The following selected consolidated financial data as of December 31, 2014 and 2013 and for the years ended December 31, 2014, 2013 and 2012 are derived from our audited consolidated financial statements included in this 2014 Form 10-K. For the years ended December 31, 2011 and 2010, income activity related to the disposed OCTG business is presented as discontinued operations, consistent with the years ended December 31, 2014, 2013, and 2012. While this 2011 and 2010 data is derived from the Company’s historical audited financial statements for those years, discontinued operations reporting for those years has not been audited.

	As of December 31,
	2014			2013			2012			2011		2010
	(In thousands, except per share amounts)
Consolidated Statement of Operations Data:
Net sales	$	403,298		$	359,445		$	388,902		$	396,994	$	318,456
Gross profit		40,576			60,236			59,108			59,513		33,235
Income (loss) from continuing operations		(6,173	)		21,676			17,501			12,544		(2,039	)
Income (loss) from discontinued operations		(11,714	)		(22,599	)		(1,257	)		116		(3,401	)
Net income (loss)		(17,887	)		(923	)		16,244			12,660		(5,440	)
Earnings per Share attributable to Northwest Pipe Company Common Stockholders:
Basic—Income (loss) from continuing operations		(0.65	)		2.29			1.87			1.35		(0.22	)
Income (loss) from discontinued operations		(1.23	)		(2.39	)		(0.14	)		0.01		(0.37	)
Net Income (loss) per share		(1.88	)		(0.10	)		1.73			1.36		(0.59	)
Diluted—Income (loss) from continuing operations		(0.65	)		2.27			1.85			1.34		(0.22	)
Income (loss) from discontinued operations		(1.23	)		(2.37	)		(0.13	)		0.01		(0.37	)
Net Income (loss) per share assuming dilution		(1.88	)		(0.10	)		1.72			1.35		(0.59	)

	As of December 31,
	2014		2013		2012		2011		2010
	(In thousands)
Consolidated Balance Sheet Data:
Working capital	$	165,683	$	195,357	$	167,392	$	170,614	$	152,810
Total assets		351,882		433,459		422,422		413,373		414,883
Long-term debt and capital lease obligations, less current portion		45,812		94,241		63,069		86,418		101,491
Stockholders’ equity		245,635		261,850		259,432		240,267		226,292

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Forward-Looking Statements

This Management’s Discussion and Analysis of Financial Condition and Results of Operations and other sections of this 2014 Form 10-K contain forward-looking statements within the meaning of the Securities Litigation Reform Act of 1995 and Section 21E of the Exchange Act that are based on current expectations,

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estimates and projections about our business, management’s beliefs, and assumptions made by management. Words such as “expects,” “anticipates,” “intends,” “plans,” “believes,” “seeks,” “estimates,” “forecasts,” “should,” and variations of such words and similar expressions are intended to identify such forward-looking statements. These statements are not guarantees of future performance and involve risks and uncertainties that are difficult to predict. Therefore, actual outcomes and results may differ materially from the results anticipated in these forward-looking statements as a result of a variety of important factors. While it is impossible to identify all such factors, those that could cause actual results to differ materially from those estimated by us include the important factors discussed in Part 1—Item 1A, “Risk Factors.” Such forward-looking statements speak only as of the date on which they are made and we do not undertake any obligation to update any forward-looking statement to reflect events or circumstances after the date of this 2014 Form 10-K. If we do update or correct one or more forward-looking statements, investors and others should not conclude that we will make additional updates or corrections with respect thereto or with respect to other forward-looking statements.

Overview

We are a leading North American manufacturer of large diameter, high-pressure steel pipeline systems for use in water infrastructure applications, primarily related to drinking water systems, and we also manufacture other welded steel pipe products for use in a wide range of applications, including energy, construction, agriculture, and industrial uses. Our pipeline systems are also used for hydroelectric power systems, wastewater systems and other applications. In addition, we make products for industrial plant piping systems and certain structural applications. With a history that dates back more than 100 years, we have become a leading manufacturer in the welded steel pipe industry. These pipeline systems are produced by our Water Transmission Group from eight manufacturing facilities, which are located in Portland, Oregon; Denver, Colorado; Adelanto, California; Parkersburg, West Virginia; Saginaw, Texas; Salt Lake City, Utah; St. Louis, Missouri; and Monterrey, Mexico. Our Water Transmission Group accounted for approximately 59% of net sales from continuing operations in 2014.

Our water infrastructure products are sold generally to installation contractors, who include our products in their bids to municipal agencies or privately-owned water companies for specific projects. We believe our sales are substantially driven by spending on new water infrastructure with a recent trend towards spending on water infrastructure replacement, repair and upgrade. Within the total range of pipe products, our products tend to fit the larger diameter, higher-pressure applications.

Our Tubular Products Group manufactures ERW steel pipe at our Atchison, Kansas facility. We produce a range of line pipe products used in several different applications including industrial, construction, and agricultural. Our Tubular Products Group generated approximately 41% of our net sales from continuing operations in 2014. Our Tubular Products Group’s sales volume is typically driven by energy spending, non-residential construction spending and general economic conditions. The OCTG business, formerly part of our Tubular Products Group, was sold in March 2014, as discussed in Item 1.

Our Current Economic Environment

We are monitoring the current economic environment, and we believe the near-term growth opportunities will be challenging based on key factors impacting demand for our products. We expect demand from the energy markets to decrease due to the recent decrease in crude oil prices. After trading near $100 per barrel for most of the period since 2011, the price of crude oil started dropping in the summer of 2014 and decreased steeply in the fourth quarter to less than $50 per barrel by January 2015. The price of crude oil has rebounded modestly in the first quarter of 2015, but prices remain much lower than levels even six months ago. Natural gas production was at historically high levels during 2014 according to the United States Energy Information Administration and strong storage levels are expected to keep natural gas prices at historically low levels. Of the active oil and natural gas rigs, approximately 78 percent of the rigs are drilling oil and 22 percent are drilling for natural gas. Rig counts in the United States began to drop in December 2014 and have been on a steady decline since then. We believe demand for line pipe will be dependent on crude oil prices through 2015.

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In addition to the macroeconomic factors described above we continue to face pressures from foreign imports, which will continue to put downward pricing pressure on our products within the markets we compete. We also face increased pressures due to recent domestic capacity expansions by our competitors. With regard to our Water Transmission Group, we operate our business with a long-term time horizon. Projects are often planned for many years in advance, and are sometimes part of fifty-year build out plans. However, in the near term, we expect strained governmental and water agency budgets will impact the Water Transmission Group. Fluctuating steel costs will be a factor in both our Tubular Products Group and our Water Transmission Group, as the ability to adjust our selling prices as steel costs fluctuate will depend on market conditions.

Critical Accounting Policies

The discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States.

Management Estimates

The preparation of our consolidated financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and disclosure of contingent assets and liabilities. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. On an on-going basis, we evaluate all of our estimates, including those related to revenue recognition, allowance for doubtful accounts, goodwill, property and equipment, including depreciation and amortization, inventories, income taxes, and litigation and other contingencies. Actual results may differ from these estimates under different assumptions or conditions. We believe the following critical accounting policies and related judgments and estimates affect the preparation of our consolidated financial statements.

Revenue Recognition:

Revenue from construction contracts in our Water Transmission Group is recognized on the percentage-of-completion method. For a majority of contracts, revenue is measured by the costs incurred to date as a percentage of the estimated total costs of each contract (cost-to-cost method). For a small number of contracts, revenue is measured using units of delivery as progress is best estimated by the number of units delivered under the contract. Contract costs include all direct material and labor costs and those indirect costs related to contract performance, such as indirect labor, supplies, tools, repairs and depreciation. Selling, general and administrative costs are charged to expense as incurred. The cost of steel is recognized as a project cost when the steel is introduced into the manufacturing process. Estimated total costs of each contract are reviewed on a monthly basis by project management and operations personnel for all active projects. All cost revisions that result in the gross profit as a percent of sales increasing or decreasing by more than two percent are reviewed by senior management personnel.

We begin recognizing revenue on a project when persuasive evidence of an arrangement exists, recoverability is reasonably assured, and project costs are incurred. Costs may be incurred before we have persuasive evidence of an arrangement. In those cases, if recoverability from that arrangement is probable, the project costs are deferred and revenue recognition is delayed.

Changes in job performance, job conditions and estimated profitability, including those arising from contract change orders, contract penalty provisions, foreign currency exchange rate movements, changes in raw materials costs, and final contract settlements may result in revisions to estimates of revenue, costs and income and are recognized in the period in which the revisions are determined. Provisions for losses on uncompleted contracts are made in the period such losses become known.

Revenue from our Tubular Products Group is recognized when all four of the following criteria have been satisfied: persuasive evidence of an arrangement exists; the price is fixed or determinable; delivery has occurred;

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and collectability is reasonably assured. Deferred revenue is recorded when the manufacturing process is complete and customers are invoiced prior to physical delivery of the product.

Allowance for Doubtful Accounts:

We maintain allowances for estimated losses resulting from the inability of our customers to make required payments based on historical experience and management’s judgment. The extension and revision of credit is established by obtaining credit rating reports or financial information on the customer. An allowance is recorded based on a variety of factors, including our historical collection experience and our historical product quality claims. At least monthly, we review past due balances to identify the reasons for non-payment. We will write down or write off a receivable account once the account is deemed uncollectible for reasons such as customer quality claims, a contract dispute, deterioration in the customer’s financial position, a bankruptcy filing or other events. We believe the reported allowances at December 31, 2014 are adequate. If the customer’s financial conditions were to deteriorate resulting in their inability to make payments, additional allowances may need to be recorded which would result in additional expenses being recorded for the period in which such determination was made.

Inventories:

Inventories are stated at the lower of cost or market. Determining market value of inventories involves judgments and assumptions made by us, including projecting selling prices and cost of sales. To project market value, we review recent sales and gross profit history, existing customer orders, current contract prices, industry supply and demand, forecasted steel prices, replacement costs, seasonal factors, general economic trends and other information, as applicable. If future market conditions are less favorable than those projected by us, inventory write-downs may be required. At December 31, 2014, the inventory balance of $74.0 million is reported net of lower of cost or market reserves totaling $6.6 million. Raw material inventories of steel are stated at cost either on a specific identification basis or on an average cost basis. All other raw materials, as well as supplies, are stated on an average cost basis. Finished goods are stated at cost using the first-in, first-out method of accounting. Due to recent volatility of energy markets, it is at least reasonably possible that these lower of cost or market reserves will materially change in the near term.

Property and Equipment:

Property and equipment are recorded at cost, and are depreciated using either the units of production method or a straight-line method depending on the classification of the asset. Depreciation expense calculated under the units of production method may be less than, equal to, or greater than depreciation expense calculated under the straight-line method. We evaluate historical and projected units of production at each plant to reassess the units of production expected on an annual basis.

We assess impairment of property and equipment whenever changes in circumstances indicate that the carrying values of the asset group may not be recoverable. The recoverable value of long-lived assets is determined by estimating future undiscounted cash flows using assumptions about our expected future operating performance. Estimates of future cash flows used in the recoverability test incorporate our own assumptions about the use of the asset group and shall consider all available evidence. Our estimates of undiscounted cash flows may differ from actual cash flow due to, among other things, technological changes, economic conditions, or changes to our business operations. If we determine the carrying value of the property and equipment will not be recoverable, we calculate and record an impairment loss. This analysis is performed prior to assessing goodwill for impairment.

Business Combinations and Valuation of Goodwill and Other Acquired Intangible Assets:

We allocate the fair value of purchase consideration to the tangible assets acquired, liabilities assumed and intangible assets acquired based on their estimated fair values. Goodwill is recorded for the excess of the fair

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value of purchase consideration over the fair values of these identifiable assets and liabilities. Such valuations require management to make significant estimates and assumptions, especially with respect to intangible assets. Contingent consideration is calculated and recorded at the date of the acquisition. During the measurement period, which does not exceed one year from the acquisition date, we may record adjustments to the assets acquired and liabilities assumed as a result of information received regarding the valuation of assets and liabilities after the acquisition date, with the corresponding offset to goodwill. Upon the conclusion of the measurement period, any subsequent adjustments are recorded to earnings.

Goodwill is reviewed for impairment annually at December 31 or whenever events occur or circumstances change that indicates goodwill may be impaired. Goodwill is tested for impairment at the reporting unit level. A reporting unit is an operating segment or one level below an operating segment (also known as a component). Our reporting units are equivalent to our operating segments as the individual components meet the criteria for aggregation.

Fair value of goodwill is first evaluated under a qualitative approach which takes into account industry and market conditions, cost factors, overall financial performance, and other relevant entity specific events and changes. In the evaluation of our operating segments, we look at the long-term prospects for the reporting units and recognize that current performance may not be the best indicator of future prospects or value, which requires management judgment. If this analysis determines that it is more likely than not that the fair value of goodwill is above its carrying value, no further analysis is required. Alternatively, we may choose to unconditionally bypass the qualitative analysis in favor of a two-step quantitative impairment test.

The first step of this analysis calculates the business enterprise value of the reporting unit by using a combination of income and market approaches. The income approach is based upon projected future after-tax cash flows discounted to present value using factors that consider the timing and risk associated with the future after-tax cash flows. The market approach is based upon historical and/or forward-looking measures using multiples of revenue or earnings before interest, tax, depreciation, and amortization (“EBITDA”). We utilize a weighted average of the income and market approaches, with a heavier weighting on the income approach because of the relatively limited number of direct comparable entities for which relevant multiples are available. If the carrying value of the reporting unit exceeds its calculated enterprise value, then the Company continues to assess the fair value of individual assets and liabilities, other than goodwill. The difference between the reporting unit enterprise value and the fair value of its identifiable net assets is the implied fair value of the reporting unit’s goodwill. A goodwill impairment loss is recorded for the difference between the implied fair value and its carrying value.

Goodwill resulting from the acquisition of Permalok of $5.3 million is included in our Water Transmission Group. The Company elected to perform a quantitative impairment test of the Water Transmission Group’s goodwill in 2014 and concluded that there was no impairment as of December 31, 2014.

Goodwill of $4.4 million related to the sale of the Company’s discontinued OCTG business in March 2014 was written off as part of the loss on sale of business.

Goodwill related to the Company’s Tubular Products Group of $16.1 million was evaluated using a quantitative impairment test. We concluded that there was no implied fair value of the Tubular Products Group goodwill and that it should be completely written off as of December 31, 2014.

If our assumptions about goodwill change as a result of future events or circumstances, and we believe the assets may have declined in value, then further impairment charges will be recorded, resulting in lower profits.

Stock-based Compensation:

We recognize the compensation cost of employee and director services received in exchange for awards of equity instruments based on the grant date estimated fair value of the awards. Share-based compensation cost is

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recognized over the period during which the employee or director is required to provide service in exchange for the award, and as forfeitures occur, the associated compensation cost recognized to date is reversed.

We estimate the fair value of Restricted Stock Units (“RSUs”) and Performance Stock Awards (“PSAs”) using the value of the Company’s stock on the date of grant, with the exception of market-based PSAs, for which a Monte Carlo simulation model is used. The Monte Carlo simulation model calculates many potential outcomes for an award and estimates fair value based on the most likely outcome.

Income Taxes:

We account for income taxes using an asset and liability approach that requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in our consolidated financial statements or tax returns. Valuation allowances are established when necessary to reduce deferred income tax assets to the amount expected to be realized. The determination of our provision for income taxes requires significant judgment, the use of estimates and the interpretation and application of complex tax laws. Our provision for income taxes primarily reflects a combination of income earned and taxed in the various United States federal and state and, to a lesser extent, foreign jurisdictions. Jurisdictional tax law changes, increases or decreases in permanent differences between book and tax items, accruals or adjustments of accruals for unrecognized tax benefits or valuation allowances, and our change in the mix of earnings from these taxing jurisdictions all affect the overall effective tax rate.

We record tax reserves for federal, state, local and international exposures relating to periods subject to audit. The development of reserves for these exposures requires judgments about tax issues, potential outcomes and timing, and is a subjective estimate. We assess our tax positions and record tax benefits for all years subject to examination based upon management’s evaluation of the facts, circumstances, and information available at the reporting dates. For those tax positions where it is more-likely-than-not that a tax benefit will be sustained, we have recorded the largest amount of tax benefit with a greater than 50% likelihood of being realized upon settlement with a tax authority that has full knowledge of all relevant information. For those tax positions where it is not more-likely-than-not that a tax benefit will be sustained, no tax benefit has been recognized in the consolidated financial statements.

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Results of Operations

The following table sets forth, for the periods indicated, certain financial information regarding costs and expenses from continuing operations expressed in dollars (in thousands) and as a percentage of total net sales from continuing operations and net sales of our business segments.

	Year Ended December 31, 2014						Year Ended December 31, 2013						Year Ended December 31, 2012
	$			% of Net Sales			$			% of Net Sales			$			% of Net Sales
Net sales:
Water transmission	$	238,545			59.1	%	$	226,427			63.0	%	$	269,203			69.2	%
Tubular products		164,753			40.9			133,018			37.0			119,699			30.8
Total net sales		403,298			100.0			359,445			100.0			388,902			100.0
Cost of sales		362,722			89.9			299,209			83.2			329,794			84.8
Gross profit		40,576			10.1			60,236			16.8			59,108			15.2
Selling, general and administrative expenses		24,316			6.0			22,701			6.3			27,822			7.2
Impairment of Tubular Products goodwill		16,066			4.0			—			0.0			—			0.0
Operating income		194			0.1			37,535			10.5			31,286			8.0
Other income (expense)		108			0.0			(289	)		(0.1	)		(339	)		(0.1	)
Interest income		466			0.1			409			0.1			147			0.0
Interest expense		(2,290	)		(0.6	)		(3,621	)		(1.0	)		(5,205	)		(1.3	)
Income (loss) before income taxes		(1,522	)		(0.4	)		34,034			9.5			25,889			6.6
Income tax expense		4,651			1.1			12,358			3.5			8,388			2.1
Income (loss) from continuing operations	$	(6,173	)		(1.5	)%	$	21,676			6.0	%	$	17,501			4.5	%
Discontinued operations:
Loss from operations of discontinued business	$	(2,151	)		(0.5	)	$	(9,583	)		(2.7	)	$	(4,124	)		(1.0	)
Impairment of fixed assets		—			0.0			(27,500	)		(7.6	)		—			0.0
Loss on sale of business		(13,497	)		(3.4	)		—			0.0			—			0.0
Income tax benefit		(3,934	)		(1.0	)		(14,484	)		(4.0	)		(2,867	)		(0.7	)
Loss on discontinued operations		(11,714	)		(2.9	)		(22,599	)		(6.3	)		(1,257	)		(0.3	)
Net Income (loss)	$	(17,887	)		(4.4	)	$	(923	)		(0.3	)	$	16,244			4.2
Segment gross profit as a percentage of net sales:
Water transmission					16.6	%					20.7	%					16.7	%
Tubular products					0.6						10.0						11.7

Year Ended December 31, 2014 Compared to Year Ended December 31, 2013

Net sales. Net sales from continuing operations increased by $43.9 million to $403.3 million in 2014 from $359.4 million in 2013. One customer accounted for 16% and another customer accounted for 10% of net sales from continuing operations in 2014. One customer also accounted for 15% of net sales from continuing operations in 2013.

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Water Transmission sales increased 5.4% to $238.5 million in 2014 from $226.4 million in 2013. The increase in net sales from continuing operations was due to a 36% increase in tons produced partially offset by a 23% decrease in average selling price per ton. The increase in tons produced was partially due to the addition of Permalok in 2014 as well as the timing of production and mix of projects produced during the year compared to 2013. Projects produced in 2013 required more fabrication, which increased the average selling price per ton in 2013 compared to 2014. In addition, a 12% decrease in materials cost per ton also led to a decrease in average selling prices. Lower material costs generally lead to lower contract values, and therefore lower net sales as contractors and municipalities are aware of the input costs and market conditions. Bidding activity, backlog and production levels may vary significantly from period to period affecting sales volumes.

Tubular Products sales from continuing operations increased 23.9% to $164.8 million in 2014 from $133.0 million in 2013. The sales increase was due to a 24% increase in tons sold from 132,800 tons to 164,600 tons. The increase in volume is directly related to our capacity expansion project in Atchison. Selling prices per ton in 2014 were relatively even with 2013. Energy pipe represented 77% of tons sold in 2014 compared to 71% for the same period of 2013. The selling price for energy pipe decreased 3% in 2014 compared with 2013.

Gross profit. Gross profit decreased 32.6% to $40.6 million (10.1% of total net sales from continuing operations) in 2014 from $60.2 million (16.8% of total net sales from continuing operations) in 2013.

Water Transmission gross profit decreased 15.7% to $39.6 million (16.6% of segment net sales from continuing operations) in 2014 from $47.0 million (20.7% of segment net sales from continuing operations) in 2013. The decrease in gross profit was primarily due to the decrease in selling price per ton, partially offset by the increase in tons produced as discussed above. We have experienced significant competition on recent project bids, which has also contributed to decreased gross profit. The mix of projects produced also contributed to the decrease in gross profit. The decrease was partially offset by our cost reduction initiatives, which have reduced overhead costs and labor hours per ton, as well as improvements in quality. Also partially offsetting the above was a $2.7 million reduction of cost of sales primarily related to insurance settlements, which reimbursed the Company for past costs incurred for Portland Harbor Site. (See Item 3, Legal proceedings, and Note 13 of the accompanying consolidated financial statements for additional information on the settlements).

Tubular Products gross profit from continuing operations decreased 92.7% to $1.0 million (0.6% of segment net sales from continuing operations) in 2014 from $13.3 million (10.0% of segment net sales from continuing operations) in 2013. The decrease in gross profit was primarily the result of a 7% increase in steel costs per ton while total average selling prices remained flat. As steel comprises 85% to 90% of Tubular Products costs, this had a significant negative impact on gross profit. Increased imports of energy pipe, low natural gas prices, and volatility of steel prices have negatively impacted gross profits, particularly in energy pipe. In addition, there was a $2.5 million lower of cost or market inventory adjustment recorded during 2014, compared to a $2.2 million lower of cost or market inventory adjustment recorded during 2013. The decrease was partially offset by cost reduction initiatives successfully implemented at our Atchison facility.

Selling, general and administrative expenses. Selling, general and administrative expenses increased 7.1%, to $24.3 million (6.0% of net sales from continuing operations) in 2014 from $22.7 million (6.3% of net sales from continuing operations) in 2013. The increase of $1.6 million compared to the prior year was primarily due to additional selling, general and administrative expenses included with the Permalok acquisition.

Impairment of goodwill. As discussed in Critical Accounting Policies, goodwill related to the Company’s Tubular Products Group of $16.1 million was evaluated for impairment. We concluded that the fair value of the Tubular Products Group was less than its carrying amount at December 31, and engaged a consultant to assist the Company in calculating implied fair value of goodwill for the reporting unit. As a result of that analysis, the entire balance of Tubular Products Group goodwill was written off in 2014. The writedown was a result of the significant decrease in crude oil prices in December 2014. There were no goodwill impairment charges recorded in 2013.

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Interest expense. Interest expense decreased to $2.3 million in 2014 from $3.6 million in 2013. The decrease was due to the payoff of our high interest bearing Term Notes in June 2014, and lower borrowings on our line of credit in 2014 compared to 2013.

Income taxes. Despite a loss before income taxes of $1.5 million for continuing operations in 2014, income tax expense from continuing operations is $4.7 million. This compares to income tax expense of $12.4 million, or 36.3% of income before income taxes from continuing operations of $34.0 million in 2013. The effective income tax rate for 2014 was negatively impacted by the $16.1 million goodwill impairment charge we recorded, which is not deductible for income tax purposes; therefore, we did not record any tax benefit for the charge. Our effective income tax rate can change significantly depending on the relationship of permanent income tax deductions and tax credits to pre-tax income or loss. Accordingly, the comparison of effective rates between periods is not necessarily meaningful in all situations.

Year Ended December 31, 2013 Compared to Year Ended December 31, 2012

Net sales. Net sales from continuing operations decreased by $29.5 million to $359.4 million in 2013 from $388.9 million in 2012. One customer accounted for 15% of net sales from continuing operations in 2013. One customer also accounted for 16% of net sales from continuing operations in 2012.

Water Transmission sales decreased 15.9% to $226.4 million in 2013 from $269.2 million in 2012. The decrease in net sales from continuing operations was due to a 39% decrease in tons produced. The decrease in tons produced was impacted by continued weakness in municipal markets. This was partially offset by positive impacts due to the timing of production and mix of projects produced during the year, as well as a 21% increase in materials cost per ton including steel. Higher steel costs generally lead to higher contract values, and therefore higher net sales as contractors and municipalities are aware of the widely available steel costs and market conditions. Bidding activity, backlog and production levels may vary significantly from period to period affecting sales volumes.

Tubular Products sales from continuing operations increased 11.1% to $133.0 million in 2013 from $119.7 million in 2012. The sales increase was due to a 27% increase in tons sold from 104,900 tons to 132,800 tons partially offset by a 12% decrease in average selling price per ton. The decrease in average selling price was due to a 6% decrease in steel cost per ton along with the downward pricing pressure from imported pipe. Increased imports of energy pipe, low natural gas prices, and volatility of steel prices negatively impacted selling prices, particularly in energy pipe. Energy pipe represented 71% of tons sold in 2013 compared to 60% for the same period of 2012. The selling price for energy pipe decreased 16% in 2013 compared with the same period of 2012.

Gross profit. Gross profit increased 1.9% to $60.2 million (16.8% of total net sales from continuing operations) in 2013 from $59.1 million (15.2% of total net sales from continuing operations) in 2012.

Water Transmission gross profit increased 4.2% to $47.0 million (20.7% of segment net sales from continuing operations) in 2013 from $45.1 million (16.7% of segment net sales from continuing operations) in 2012. The increase in gross profit was primarily due to the mix of projects partially offset by the decrease in tons produced as discussed above. The increase in gross profit as a percentage of net sales from continuing operations was driven by a favorable project mix, including the production of the Lake Texoma project, the largest project in our history. The increase in gross profit was also the result of cost reduction initiatives which have reduced overhead costs and labor hours per ton, as well as improvements in quality.

Tubular Products gross profit decreased 5.5% to $13.3 million (10.0% of segment net sales from continuing operations) in 2013 from $14.1 million (11.7% of segment net sales from continuing operations) in 2012. The decrease in gross profit was primarily the result of a $2.2 million lower of cost or market inventory adjustment

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recorded during 2013. This was partially offset by a 1.1% decrease in materials cost per ton during 2013. The decrease in materials cost per ton for Tubular Products as compared with the increase in materials cost per ton for Water Transmission was due to timing of purchases. Also offsetting the above were cost reduction initiatives successfully implemented at our Atchison facility.

Selling, general and administrative expenses. Selling, general and administrative expenses decreased 18.4%, to $22.7 million (6.3% of net sales from continuing operations) in 2013 from $27.8 million (7.2% of net sales from continuing operations) in 2012. The decrease of $5.1 million compared to the prior year was due to a $1.1 million decrease in wages and benefits, a $0.9 million decrease in professional fees and outside services primarily due to a reduction in audit related fees, a $0.9 million decrease in administrative and other miscellaneous expenses, a $0.6 million decrease in travel and entertainment, and a $0.5 million decrease in bonus expense.

Interest expense. Interest expense decreased to $3.6 million in 2013 from $5.2 million in 2012. Lower average interest rates and a decrease in amortization expense of deferred financing costs following the refinancing of our Credit Agreement during the fourth quarter of 2012 resulted in decreased Interest expense in 2013 compared to 2012. This was partially offset by higher borrowings in 2013 compared to 2012.

Income taxes. Our effective tax rate from continuing operations was 36.3% and 32.4% in 2013 and 2012, respectively. The difference from the federal statutory rate of 35% was due primarily to the benefit from the section 199 qualified domestic production deduction.

Liquidity and Capital Resources

Sources and Uses of Cash

Our principal sources of liquidity generally include operating cash flow and our Credit Agreement. From time to time our long-term capital needs may be met through the issuance of long-term debt or additional equity. Our principal uses of liquidity generally include capital expenditures, working capital and debt service. Information regarding our cash flows for the twelve months ended December 31, 2014 is presented in our consolidated statements of cash flows contained in this 2014 Form 10-K, and is further discussed below.

As of December 31, 2014, our working capital (current assets minus current liabilities) was $165.7 million as compared to $195.4 million as of December 31, 2013. Cash and cash equivalents totaled $0.5 million as of December 31, 2014 and $0.6 million as of December 31, 2013.

Net Cash Provided by (Used in) Operating Activities

Net cash provided by operating activities in 2014 was $35.0 million. This was primarily the result of our net loss, adjusted by noncash charges of $16.1 million for goodwill impairment, $13.6 million for depreciation and the positive cash flow effect of a decrease in working capital.

Net cash provided by operating activities in 2013 was $20.1 million. This was primarily the result of our net loss, adjusted by noncash charges of $13.3 million for depreciation and $27.5 million for fixed asset impairment charges, partially offset by an overall increase in working capital at December 31, 2013 compared to December 31, 2012.

Net cash provided by operating activities in 2012 was $44.5 million. This was primarily the result of net income adjusted by a noncash charge of $16.2 million for depreciation, and the positive cash flow effect of a decrease in our working capital, including decreases in our accounts receivable of $28.3 million and increases in accrued liabilities of $11.4 million, partially offset by increases in costs and estimated earnings in excess of billings on uncompleted contracts of $36.6 million.

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Fluctuations in our working capital accounts result from timing differences between production, shipment, invoicing, and collection, as well as changes in levels of production and costs of materials. We typically have a relatively large investment in working capital, as we generally pay for materials, labor, and other production costs in the initial stages of a project, while payments from our customers are generally received after finished product is delivered. Our revenues in the Water Transmission segment are recognized on a percentage-of-completion method; therefore, cash receipts typically occur subsequent to when revenue is recognized and the elapsed time between when revenue is recorded and when cash is received can be significant. As such, our payment cycle is a significantly shorter interval than our collection cycle, although the effect of this difference in the cycles may vary by project, and from period to period.

Net Cash (Used in) Provided by Investing Activities

Net cash provided by investing activities in 2014 was $15.5 million, primarily due to net proceeds of $29.8 million received from the sale of substantially all of the assets and liabilities associated with the OCTG business, partially offset by capital expenditures of $14.3 million. Capital expenditures in 2014 included $2.5 million for the replacement of the existing front end of our 16 inch mill and $1.8 million for a new hydro tester at our Atchison plant. Net cash used for investing activities for discontinued operations in 2014 was not material. Capital expenditures in 2015 are expected to be approximately $15 million to $16 million for standard capital replacement.

Net cash used in investing activities in 2013 was $48.3 million, primarily related to capital expenditures of $28.5 million for previously disclosed strategic investment projects, $15.7 million for the acquisition of Permalok, and funds disbursed under a notes receivable arrangement of $5.7 million. Previously disclosed strategic investment projects include the installation of an additional horizontal accumulator and hydrotester, and the replacement of the existing front end of the 16 inch mill at our Atchison plant, as well as expansion at our Saginaw plant, which will enable production of pipe up to 126 inches in diameter as well as increase overall capacity. Expenditures for these strategic investments during 2013 included $7.1 million for the replacement of the existing front end of the 16 inch mill and $1.7 million for a new hydrotester at our Atchison plant, and $9.2 million for expansion projects at our Saginaw plant. This was partially offset by proceeds received from the sale of property and equipment of $1.7 million.

Net cash used in investing activities in 2012 was $19.3 million, primarily related to capital expenditures of $16.8 million. These expenditures relate to storm water upgrades at our Portland, Oregon facility and planned capacity expansion in our Tubular Products plants.

Net Cash (Used in) Provided by Financing Activities

Net cash used by financing activities in 2014 was $50.6 million, which resulted primarily from net repayments under our Credit Agreement, long-term debt and capital lease payments totaling $49.9 million.

Net cash provided by financing activities in 2013 was $28.7 million, which resulted primarily from net borrowings of $40.4 million under our Credit Agreement, offset by long-term debt and capital lease payments of $11.0 million.

Net cash used in financing activities in 2012 was $25.3 million, which resulted primarily from net payments of $14.5 million under our Credit Agreement and by long-term debt and capital lease payments of $9.1 million.

We anticipate that our existing cash and cash equivalents, cash flows expected to be generated by operations, and amounts available under our Credit Agreement will be adequate to fund our working capital and capital expenditure requirements for at least the next twelve months. To the extent necessary, we may also satisfy capital requirements through additional bank borrowings, senior notes, term notes, subordinated debt, and capital and operating leases, if such resources are available on satisfactory terms. We have from time to time evaluated

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and continue to evaluate opportunities for acquisitions and expansion. Any such transactions, if consummated, may use a portion of our working capital or necessitate additional bank borrowings or other sources of funding.

Line of Credit and Capital Lease Obligations

As of December 31, 2014, our primary component of debt was $45.6 million of borrowings on our line of credit. Our Credit Agreement allows us to borrow up to $165 million, subject to compliance with financial covenants. At December 31, 2014, we had $61.7 million available to borrow under the Credit Agreement while remaining in compliance with the Company’s financial covenants. The Credit Agreement will expire on October 24, 2017. Borrowings under the Credit Agreement are collateralized by substantially all of our personal property.

Under the Credit Agreement, the Company’s borrowings bear interest at LIBOR plus 1.75% to 2.75%, or the lending institution’s prime rate plus 0.75% to 1.75%. The Company was able to borrow at LIBOR plus 2.0% at December 31, 2014. The Credit Agreement bears interest at a weighted average rate of 2.43% at December 31, 2014.

At December 31, 2013, we had $87.9 million outstanding under the Credit Agreement, bearing interest at a weighted average rate of 2.69%.

We had a total of $2.4 million in capital lease obligations outstanding at December 31, 2014. The weighted average interest rate on all of our capital leases is 9.66%. Our capital leases are for certain equipment used in the manufacturing process.

The Credit Agreement and certain lease agreements place various restrictions on our ability to, among other things; incur certain additional indebtedness, create liens or other encumbrances on assets, and incur additional capital expenditures. The Credit Agreement, and certain lease agreements require us to be in compliance with certain financial covenants. The results of our financial covenants as of December 31, 2014 are below.

• The Consolidated Total Leverage Ratio must not be greater than 3.5:1.0. Our ratio as of December 31, 2014 is 1.48:1.0.

• The Consolidated Tangible Net Worth must be greater than $214.4 million. Our tangible net worth as of December 31, 2014 is $236.9 million.

• The Consolidated Fixed Charge Coverage ratio must not be less than 1.25:1.0. Our ratio as of December 31, 2014 is 3.76:1.0.

Based on our business plan and forecasts of operations, we believe we will remain in compliance with our covenants in 2015.

The following table sets forth our scheduled contractual commitments that will affect our future liquidity as of December 31, 2014 (in thousands):

			Payments due by period
	Total		Less than 1 year		1–3 years		3–5 years		More than 5 years
Borrowings on line of credit (1)	$	45,587		—		45,587	$	—	$	—
Capital leases		2,395		2,170		225		—		—
Operating leases		11,408		2,557		4,642		1,718		2,491
Contingent consideration		2,679		—		2,679		—		—
Interest payments (2)		125		113		12		—		—
Total obligations (3) (4)	$	62,194	$	4,840	$	53,145	$	1,718	$	2,491

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1) Borrowings on line of credit are classified as long-term debt within the consolidated balance sheet as the Credit Agreement will expire on October 24, 2017, and we expect to extend, renew, or replace our existing line of credit borrowings to the extent required by working capital or other borrowing needs.

2) These amounts represent estimated future interest payments related to our debt obligations, excluding the Credit Agreement.

3) Excludes liabilities associated with our pension and our deferred compensation plan as we are unable to reasonably estimate the ultimate amount or timing of settlement of such obligations. As of December 31, 2014, liabilities associated with our pension and deferred compensation plan are $2.1 million and $6.6 million, respectively and are recorded in pension and other long-term liabilities within the consolidated balance sheets.

4) Due to the uncertainty with respect to the timing of future cash flows associated with our unrecognized tax benefits at December 31, 2014, we are unable to make reasonably reliable estimates of the period of cash settlement with the respective taxing authorities. Therefore, approximately $2.3 million in uncertain tax positions has been excluded from the contractual table above. For further information, see Note 14 in Part II—Item 8, “Financial Statements and Supplementary Data” of the consolidated financial statements.

We also have entered into stand-by letters of credit that total approximately $2.3 million as of December 31, 2014. The stand-by letters of credit relate to workers’ compensation insurance. Based on the nature of these arrangements and our historical experience, we do not expect to make any material payments under these arrangements.

Off Balance Sheet Arrangements

We do not have any off balance sheet arrangements that are reasonably likely to have a current or future material effect on our financial position, results of operations or cash flows.

Adoption of New Accounting Pronouncements

The Company adopted ASU No. 2013-11, “Income Taxes: Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists” during the year ended December 31, 2014. The Company adopted ASU No. 2014-08, “Presentation of Financial Statements and Property, Plant and Equipment” on January 1, 2015. For further information about our adoption of new accounting pronouncements, see Note 1 in Part II – Item 8, “Financial Statements and Supplementary Data” of the consolidated financial statements.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

The primary market risks affecting our business relate to our exposure to commodity risk, interest rate risk, and foreign currency exchange rate risk.

Commodity Risk

Certain materials we use in our business are classified as commodities traded in the worldwide markets, of which the most significant commodity is steel, used in the manufacturing of pipe. We do not hedge our commodity risk and do not enter into any transactions in commodities for trading purposes. The impact of volatility in steel prices to each of our operating segments varies significantly. This volatility can significantly affect our gross profit. Although we seek to recover increases in steel prices through price increases in our products, we have not always been successful.

Steel comprises approximately 25% to 35% of Water Transmission project costs. As steel represents a substantial portion of our cost of sales, we generally place orders for steel as soon as possible after a project is awarded. Most projects are awarded within thirty to ninety days of the bid date, and thus we are subject to some market fluctuations involving steel. In order to minimize our risk exposure to steel volatility, we typically submit bids based on general assumptions of the price of steel when we would receive a purchase order or contract. In

34

addition, we typically order steel at the beginning of the project in order to minimize our exposure to fluctuations in steel prices.

By contrast, steel comprises approximately 85% to 90% of total product costs for Tubular Products. Historically, we have been able to adjust our selling prices to reflect fluctuations in our cost of steel; however, we are exposed to volatile steel prices in those instances in which we carry steel inventory that is not already assigned to sales orders. To minimize this risk, we monitor steel inventory and purchasing actions. If steel costs were to decline after December 31, 2014, our Tubular Products division would have approximately two months of steel inventory exposed to the risk of declining gross margins.

Interest Rate Risk

Our debt at December 31, 2014 bears interest at both fixed and variable rates. At December 31, 2014, approximately $45.6 million of our debt accrues interest at a variable rate as compared to $87.9 million at December 31, 2013. Assuming average interest rates and borrowings on variable rate debt, a hypothetical 1.0%, or 100 basis point change in interest rates would not have a material impact on our interest expense in either year.

Foreign Currency Exchange Rate Risk

We transact business in various foreign countries, and, from time to time, settle our transactions in foreign currencies. We have established a program that utilizes foreign currency forward contracts to offset the risk associated with the effects of certain foreign currency exposures, typically arising from sales contracts denominated in Canadian currency. These contracts are not used for trading or for speculative purposes. Foreign currency forward contracts are consistent with our strategy for financial risk management and have maturities generally less than one year. As of December 31, 2014, the total notional amount of these derivative contracts was $1.3 million (CAD$1.5 million), of which we applied hedge accounting to $1.3 million (CAD$1.5 million). At December 31, 2014, none of the Company’s contracts had a remaining maturity of greater than 12 months. As of December 31, 2013, the total notional amount of our derivative contracts was $3.9 million (CAD$4.1 million) of which we applied hedge accounting to $3.8 million (CAD$4.1 million).

A hypothetical 10% change in the Canadian Dollar foreign currency exchange rate would not have a material impact on our reported 2014 or 2013 net sales from continuing operations.

Item 8. Financial Statements and Supplementary Data

The consolidated financial statements required by this item are included on pages F-1 to F-36 at the end of this 2014 Form 10-K. The financial statement schedule required by this item is included on page S-1. The quarterly information required by this item is included under the caption Quarterly Data (unaudited) in Note 18 of the Notes to Consolidated Financial Statements in Part II—Item 8, “Financial Statements and Supplementary Data” of this 2014 Form 10-K.

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (“Exchange Act”)) are designed to provide reasonable assurance that information required to be disclosed in reports we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the SEC and that such

35

information is accumulated and communicated to our management, including the Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”), as appropriate, to allow timely decisions regarding required disclosures.

Management, with the participation of our CEO and CFO, evaluated the effectiveness of our disclosure controls and procedures as of the end of the period. Based on their evaluation, our CEO and CFO have concluded that our disclosure controls and procedures were not effective as of December 31, 2014 because of the material weakness in our internal control over financial reporting described below. Notwithstanding the material weakness described below, our management has concluded that the consolidated financial statements for the periods covered by and included in this Annual Report on Form 10-K are fairly stated in all material respects in accordance with generally accepted accounting principles in the United States of America for each of the periods presented herein.

Management’s Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rules 13a-15(f) and 15d-15(f) under the Exchange Act. Internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles (“GAAP”). Internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of our assets; (ii) provide reasonable assurance that our transactions are recorded as necessary to permit preparation of financial statements in accordance with GAAP, and that our receipts and expenditures are being made only in accordance with authorizations of management and our directors; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of our assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect all misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Under the supervision and with the participation of our management, including our CEO and CFO, we conducted an assessment of the effectiveness of our internal control over financial reporting as of December 31, 2014. In making this assessment, we used the criteria set forth in Internal Control-Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

Material Weakness Previously Identified

We previously identified and disclosed in our Amendment No. 1 to our Annual Report on Form 10-K/A (filed on September 4, 2014) for the period ended December 31, 2013, a material weakness in our internal control over financial reporting related to our impairment assessment of goodwill that still exists as of December 31, 2014. As a result, management has concluded that the Company’s internal control over financial reporting was not effective as of December 31, 2014.

A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of our annual or interim

36

financial statements will not be prevented or detected on a timely basis. The material weakness in our internal controls over financial reporting as of December 31, 2014 is:

• We did not design and maintain effective controls over our impairment assessment of goodwill. Specifically, we did not design and maintain effective controls related to the critical review of assumptions, data inputs and results of the goodwill impairment analysis, and the identification of changes in events and circumstances that indicate it is more likely than not that a goodwill impairment has occurred between annual impairment tests.

The control deficiency did not result in any adjustments to our annual or interim consolidated financial statements for any period; however, the control deficiency could result in misstatements to the goodwill and impairment of goodwill account balances and disclosures that would result in a material misstatement to the annual or interim consolidated financial statements that would not be prevented or detected. Accordingly, we have determined that this control deficiency constitutes a material weakness.

The effectiveness of our internal control over financial reporting as of December 31, 2014 has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in their report which appears in Part II, Item 8 of this Annual Report.

Changes in Internal Control over Financial Reporting

There have been no changes in our internal control over financial reporting during the quarter ended December 31, 2014 that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Remediation Plan

In response to the material weakness described above, our management, with the oversight from the Audit Committee of our Board of Directors, is in the process of remediating the underlying causes of the material weakness. As of December 31, 2014, the Company has made progress on several of the actions identified in its Plan of Remediation identified in our Amendment No. 1 to our Annual Report on Form 10-K/A (filed on September 4, 2014) for the period ended December 31, 2013. The Company has enhanced its process documentation and initiated the design of new procedures related to the review of assumptions and data inputs used in the goodwill impairment assessment process. The Company has completed its design and implementation of controls specifically related to the evaluation of changes in events and circumstances which occur between annual impairment tests. These steps resulted in improvements to the process, but the Company recognizes additional steps related to the design, implementation, and evaluation of its control procedures are necessary to remediate this material weakness.

We will take the following further actions in order to remediate this material weakness as soon as practicable:

• Review, expand, and enhance documentation of the processes and controls related to the impairment assessment of goodwill.

• Design, document, and implement additional control procedures related to the review of the assumptions and data inputs used in the analysis, as well as review of the results of the goodwill impairment analysis.

• Test and evaluate the design and operating effectiveness of the control procedures.

• Conclude on the effectiveness of the remediation plan.

We believe these additional internal controls, when fully designed, implemented, and operating, will be effective in remediating the material weakness described above. As these controls predominately operate on an

37

annual or an as needed basis, as in the case of an interim triggering event, this material weakness is not likely to be remediated at least until December 31, 2015. As we continue to evaluate and work to improve our internal control over financial reporting, management may determine to take additional measures to address the material weakness or determine to modify the remediation plan described above. Until the remediation steps set forth above are fully implemented, the material weakness described above will continue to exist.

Item 9B. Other Information

None.

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PART III

Item 10. Directors, Executive Officers and Corporate Governance

Directors, Executive Officers, Promoters and Control Persons

The information required by Paragraph (a), and Paragraphs (c) through (g) of Item 401 of Regulation S-K (except for information required by Paragraph (e) of that Item to the extent the required information pertains to our executive officers) and Item 405 of Regulation S-K is hereby incorporated by reference from our definitive proxy statement for the 2015 Annual Meeting of Shareholders under the captions Election of Directors and Section 16(A) Beneficial Ownership Reporting Compliance.

Name	Age		Current Position with Company
Scott Montross		50	Director, President and Chief Executive Officer
Robin Gantt		43	Senior Vice President and Chief Financial Officer
Richard Baum		58	Senior Vice President, General Counsel and Corporate Secretary
Martin Dana		49	Executive Vice President, Sales and Marketing
Robert L. Mahoney		53	Senior Vice President, Strategy and Business Development
William Smith		59	Executive Vice President, Operations

Scott Montross has served as our Director, President and CEO since January 1, 2013. Mr. Montross joined the Company in May, 2011 and served as our Executive Vice President and Chief Operating Officer. Mr. Montross has served in Senior Vice President level positions since 2003 with commercial, operational, and planning responsibilities and has spent a total of 23 years in the steel industry prior to joining the Company. Mr. Montross previously served as the Executive Vice President of the Flat Products Group for Evraz Inc. NA’s Oregon Steel Division from 2010 to 2011, as the Vice President and General Manager of Evraz, Inc. NA from 2007 to 2010, as the Vice President of Marketing and Sales for Oregon Steel Mills, Inc. from 2003 to 2006, and as the Vice President of Marketing and Sales for National Steel Corporation from 2002 to 2003.

Robin Gantt has served as our Senior Vice President and CFO since January 2011 having joined the Company in July 2010. Ms. Gantt served as the CFO and Treasurer of Evraz Inc. NA from September 2007 through January 2010. From July 2005 through August 2007, Ms. Gantt served as Corporate Controller of Oregon Steel Mills, Inc., which became Evraz Inc. NA after its acquisition by Evraz Group SA in January 2007. Ms. Gantt joined Oregon Steel Mills, Inc. in 1999, holding several finance and accounting positions of increasing responsibility before being appointed to Controller in 2005.

Richard Baum joined the Company in April, 2011 and serves as our Senior Vice President, General Counsel and Corporate Secretary. Mr. Baum was a litigation partner with the law firm of Lane Powell LLP from January 1, 2011 through April 2011. Prior to that, he was a litigation partner with the law firm of Roberts Kaplan LLP from November 2008 through December 2010, and was a litigation attorney with the law firm of Perkins Coie LLP from September 1982 through October 2008, including twenty years as a partner. Mr. Baum’s private practice focused on commercial litigation with an emphasis on securities litigation and corporate governance issues.

Martin Dana has served as our Executive Vice President, Sales and Marketing since April 2014. Previous positions at the Company held by Mr. Dana include Executive Vice President, Tubular Products Group, Vice President of Operations for Tubular Products, Vice President of Sales and Marketing for the Water Transmission Group, and other management and Vice President level positions since joining the Company in 1999. Prior to joining the Company, Mr. Dana held positions at Oregon Steel Mills.

Robert L. Mahoney has served as our Senior Vice President, Strategy and Business Development since January 2012, responsible for identifying and securing growth opportunities across the Company. He had served

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as the Senior Vice President, Tubular Products Group, since June 2007, as Vice President, Chief Strategic Officer since May 2005, as Vice President, Corporate Development since July 1998, and as Director of Business Planning and Development since 1996. Mr. Mahoney has been with the Company since 1992.

William Smith has served as our Executive Vice President, Operations since April 2014. Prior to that, Mr. Smith served as our Executive Vice President, Water Transmission Group, and as Vice President of Operations for Water Transmission. Prior to joining the Company in 2010, Mr. Smith spent 14 years with Ameron International Corporation, holding several key positions including President, Water Transmission. A 38-year veteran of the steel pipe business, Mr. Smith has held positions with United Concrete Pipe, Thompson Steel Pipe and LB Foster.

Code of Ethics

We have adopted a Code of Business Conduct and Ethics for all employees and a Code of Ethics for Senior Financial Officers. Copies can be found on our website at www.nwpipe.com in the Corporate Governance area of the Investor Relations section or by writing to Northwest Pipe Company, attn. Corporate Secretary, 5721 SE Columbia Way, Suite 200, Vancouver, WA 98661. None of the material on our website is part of this 2014 Form 10-K. If there is any waiver from any provision of either the Code of Business Conduct and Ethics or the Code of Ethics for Senior Financial Officers, we will disclose the nature of such waiver on our website or in a Current Report on Form 8-K.

Corporate Governance

The information required by Items 407(c)(3), (d)(4) and (d)(5) of Regulation S-K is hereby incorporated by reference from our definitive proxy statement for the 2015 Annual Meeting of Shareholders under the captions Nominating and Governance Committee; Nominations by Shareholders and Audit Committee.

Item 11. Executive Compensation

The information required by this Item is hereby incorporated by reference from our definitive proxy statement for the 2015 Annual Meeting of Shareholders under the captions Executive Compensation, Compensation Committee Interlocks and Insider Participation, and Compensation Committee Report.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The following table provides information as of December 31, 2014, with respect to the shares of our common stock that may be issued under our existing equity compensation plans.

Plan Category	Number of securities to be issued upon exercise of outstanding options, warrants and rights (a) (1)		Weighted-average exercise price of outstanding options, warrants and rights (b) (2)		Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a)) (c)
Equity compensation plans approved by security holders		269,215	$	26.05		643,393
Equity compensation plans not approved by security holders (3)		—		—		—
Total		269,215	$	26.05		643,393

(1) Consists of our 2007 Stock Incentive Plan and the 1995 Stock Option Plan for Nonemployee directors. Approximately 185,000 Performance Stock Awards (“PSAs”) have been included at a target level. The

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vesting of these awards is subject to the achievement of specific performance-based or market-based conditions, and the actual number of common shares that will ultimately be issued will be determined by multiplying this number of PSAs by a payout percentage ranging from 0% to 200%.

(2) The weighted-average exercise price set forth in this column is calculated excluding outstanding restricted stock units and PSAs, since recipients are not required to pay an exercise price to receive the shares subject to these awards.

(3) We do not have any equity compensation plans or arrangements that have not been approved by shareholders.

The information required by Item 403 of Regulation S-K is included in our definitive proxy statement for the 2015 Annual Meeting of Shareholders under the caption Stock Owned by Management and Principal Shareholders and is incorporated herein by reference.

Item 13. Certain Relationships and Related Transactions, and Director Independence

The information required by this Item is hereby incorporated by reference from our definitive proxy statement for the 2015 Annual Meeting of Shareholders under the captions Certain Relationships and Related Transactions and Election of Directors.

Item 14. Principal Accountant Fees and Services

The information required by this Item is hereby incorporated by reference from our definitive proxy statement for the 2015 Annual Meeting of Shareholders under the caption Independent Registered Public Accounting Firm.

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PART IV

Item 15. Exhibits and Financial Statement Schedule

(a) (1) Consolidated Financial Statements

The consolidated financial statements, together with the reports thereon of PricewaterhouseCoopers LLP are included on the pages indicated below.

	Page
Reports of Independent Registered Public Accounting Firm		F-1
Consolidated Statements of Operations for the years ended December 31, 2014, 2013 and 2012		F-3
Consolidated Statements of Comprehensive Income (Loss) for the years ended December 31, 2014, 2013 and 2012		F-4
Consolidated Balance Sheets as of December 31, 2014 and 2013		F-5
Consolidated Statements of Stockholders’ Equity for the years ended December 31, 2014, 2013 and 2012		F-6
Consolidated Statements of Cash Flows for the years ended December 31, 2014, 2013 and 2012		F-7
Notes to Consolidated Financial Statements		F-8

(a) (2) Financial Statement Schedule

The following schedule is filed herewith:

	Page
Schedule II Valuation and Qualifying Accounts		S-1

Schedules not listed above have been omitted because the information required to be set forth therein is not applicable or is included in the consolidated financial statements or notes thereto.

(a) (3) Exhibits included herein:

Exhibit Number	Description
2.1	Asset Purchase Agreement by and between Northwest Pipe Company and Centric Pipe, LLC, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on April 1, 2014.
3.1	Second Restated Articles of Incorporation, incorporated by reference to Exhibits to the Company’s Registration Statement on Form S-1, as amended, effective November 30, 1995, Commission Registration No. 33-97308 (“the S-1”)
3.2	First Amendment to Second Restated Articles of Incorporation, incorporated by reference to Exhibits to the Company’s Registration Statement of Form S-3, as amended, effective November 1, 2006, Commission Registration No. 333-137923 (“the S-3”)
3.3	Second Amended and Restated Bylaws, incorporated by reference to Exhibits to the S-1
3.4	First Amendment to Second Amended and Restated Bylaws of Northwest Pipe Company, incorporated by reference to Exhibits to the Company’s Report on Form 8-K as filed with the Securities and Exchange Commission on November 19, 2007
4.1	Amended and Restated Rights Agreement, dated as of June 18, 2009, between the Company and Mellon Investor Services LLC as Rights Agent, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on June 19, 2009
10.1	1995 Stock Option Plan for Nonemployee Directors, incorporated by reference to Exhibits to the S-1*

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Exhibit Number	Description
10.2	Northwest Pipe NQ Retirement Savings Plan, dated July 1, 1999, incorporated by reference to Exhibits to the Company’s Quarterly Report Form 10-Q for the quarter ended June 30, 2000, as filed with the Securities and Exchange Commission on August 11, 2000*
10.3	Amended and Restated Note Purchase and Private Shelf Agreement dated as of May 31, 2007 by and among Northwest Pipe Company, Prudential Investment Management, Prudential Retirement Insurance and Annuity Company and Prudential Insurance Company of America and certain affiliates, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on June 6, 2007
10.4	Northwest Pipe Company 2007 Stock Incentive Plan, incorporated by reference to Appendix A to the Company’s Definitive Proxy Statement dated April 20, 2007, as filed with the Securities and Exchange Commission on April 26, 2007*
10.5	First Amendment and Limited Waiver to the Amended and Restated Note Purchase and Private Shelf Agreement dated as of October 14, 2008 by and among Northwest Pipe Company and Prudential Investment Management, Inc. and certain affiliates (certain schedules to the Agreement have been omitted), incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on October 20, 2008
10.6	Form of Amended and Restated Change in Control Agreement, dated December 31, 2008, between Northwest Pipe Company and Robert L. Mahoney, incorporated by reference to Exhibits to the Company’s Annual Report on Form 10-K for the year ended December 31, 2008, as filed with the Securities and Exchange Commission on March 13, 2009*
10.7	Third Amendment to the Amended and Restated Note Purchase and Private Shelf Agreement dated as of February 12, 2010 by and among Northwest Pipe Company and Prudential Investment Management, Inc. and certain affiliates, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on February 19, 2010
10.8	Fourth Amendment to the Amended and Restated Note Purchase and Private Shelf Agreement dated as of April 15, 2010 by and among Northwest Pipe Company and Prudential Investment Management, Inc. and certain affiliates, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on April 26, 2010
10.9	Fifth Amendment and Limited Consent to the Amended and Restated Note Purchase and Private Shelf Agreement dated as of July 23, 2010 by and among Northwest Pipe Company and Prudential Investment Management, Inc. and certain affiliates, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on July 29, 2010
10.10	Sixth Amendment and Temporary Waiver to the Amended and Restated Note Purchase and Private Shelf Agreement dated as of July 30, 2010 by and among Northwest Pipe Company and Prudential Investment Management, Inc. and certain affiliates, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on August 5, 2010
10.11	Seventh Amendment and Limited Waiver to the Amended and Restated Note Purchase and Private Shelf Agreement dated as of September 16, 2010 by and among Northwest Pipe Company and Prudential Investment Management, Inc. and certain affiliates, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on October 5, 2010

43

Exhibit Number	Description
10.12	Eighth Amendment and Limited Waiver to the Amended and Restated Note Purchase and Private Shelf Agreement dated as of October 15, 2010 by and among Northwest Pipe Company and Prudential Investment Management, Inc. and certain affiliates, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on October 27, 2010
10.13	Change in Control Agreement between Northwest Pipe Company and Robin Gantt dated as of April 21, 2011, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on April 25, 2011
10.14	Change in Control Agreement between Northwest Pipe Company and Richard Baum dated as of May 27, 2011, incorporated by reference to Exhibits to the Company’s Quarterly Report on Form 10-Q for the period ended June 30, 2011, as filed with the Securities and Exchange Commission on August 8, 2011
10.15	Form of grant of restricted stock units by Northwest Pipe Company to certain Named Officers, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on October 12, 2011*
10.16	Form of grant of performance share units by Northwest Pipe Company to certain Named Officers, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on October 12, 2011*
10.17	Form of grant of restricted stock units by Northwest Pipe Company to certain Named Officers, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on June 20, 2012*
10.18	Form of grant of performance share units by Northwest Pipe Company to certain Named Officers, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on June 20, 2012*
10.19	Amended and Restated Credit Agreement dated October 24, 2012, by and among Northwest Pipe Company, Bank of America, N.A., US Bank National Association, Wells Fargo Bank, National Association and Bank of the West, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on October 29, 2012
10.20	Third Amended and Restated Intercreditor and Collateral Agency Agreement dated as of October 24, 2012 by and between Northwest Pipe Company, Bank of America, N.A., US Bank National Association, Wells Fargo Bank, National Association, Bank of the West, and Prudential Investment Management, Inc. and certain of its affiliates, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on October 29, 2012
10.21	Executive Employment Agreement dated December 19, 2012 between Northwest Pipe Company and Richard A. Roman, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on December 20, 2012*
10.22	Ninth Amendment to the Amended and Restated Note Purchase and Private Shelf Agreement dated as of September 16, 2010 by and among Northwest Pipe Company and Prudential Investment Management, Inc. and certain affiliates, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on October 29, 2012
10.23	Form of grant of restricted stock units by Northwest Pipe Company to certain Named Officers, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on June 6, 2013*

44

Exhibit Number	Description
10.24	Form of grant of performance share units by Northwest Pipe Company to certain Named Officers, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on June 6, 2013*
10.25	Change in Control Agreement between Northwest Pipe Company and William Smith dated as of October 15, 2013, incorporated by reference to Exhibits to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2013, as filed with the Securities and Exchange Commission concurrently on November 5, 2013*
10.26	Change in Control Agreement between Northwest Pipe Company and Martin Dana dated as of October 15, 2013, incorporated by reference to Exhibits to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2013, as filed with the Securities and Exchange Commission concurrently on November 5, 2013*
10.27	Northwest Pipe Company 2014 Short Term Incentive Plan, incorporated by reference to the Company’s Annual Report on Form 10-K for the year ended December 31, 2013, as filed with the Securities and Exchange Commission on March 17, 2014*
10.28	Executive Employment Agreement between Northwest Pipe Company and Gary A. Stokes, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on April 4, 2014*
10.29	Form of Restricted Stock Unit Agreement, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on June 4, 2014*
10.30	Form of Performance Share Award Agreement, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on June 4, 2014*
10.31	Change in Control Agreement between Northwest Pipe Company and Scott Montross dated as of May 29, 2014, incorporated by reference to the Company’s Current Report on Form 8-K, as filed with the Securities and Exchange Commission on June 4, 2014*
10.32	Northwest Pipe Company 2015 Short Term Incentive Plan dated as of February 26, 2015, filed herewith
21.1	Subsidiaries of the Registrant, filed herewith
23.1	Consent of PricewaterhouseCoopers LLP, filed herewith
31.1	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith
31.2	Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith
32.1	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, filed herewith
32.2	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, filed herewith
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

* This exhibit constitutes a management contract or compensatory plan or arrangement.

45

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Stockholders of Northwest Pipe Company

In our opinion, the accompanying consolidated balance sheets and the related consolidated statements of operations, comprehensive income (loss), stockholders’ equity and cash flows present fairly, in all material respects, the financial position of Northwest Pipe Company and its subsidiaries at December 31, 2014 and 2013, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2014 in conformity with accounting principles generally accepted in the United States of America. In addition, in our opinion, the financial statement schedule listed in the index appearing under Item 15(a)(2) presents fairly, in all material respects, the information set forth therein when read in conjunction with the related consolidated financial statements. Also in our opinion, the Company did not maintain, in all material respects, effective internal control over financial reporting as of December 31, 2014, based on criteria established in Internal Control—Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) because a material weakness in internal control over financial reporting related to the Company not designing and maintaining effective controls over its impairment assessment of goodwill existed as of that date. A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the annual or interim financial statements will not be prevented or detected on a timely basis. The material weakness referred to above is described in Management’s Report on Internal Control over Financial Reporting appearing under Item 9A. We considered this material weakness in determining the nature, timing, and extent of audit tests applied in our audit of the December 31, 2014 consolidated financial statements and our opinion regarding the effectiveness of the Company’s internal control over financial reporting does not affect our opinion on those consolidated financial statements. The Company’s management is responsible for these financial statements and financial statement schedule, for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting included in management’s report referred to above. Our responsibility is to express opinions on these financial statements, on the financial statement schedule, and on the Company’s internal control over financial reporting based on our integrated audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material respects. Our audits of the financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

F-1

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP

Portland, Oregon

March 16, 2015

F-2

NORTHWEST PIPE COMPANY AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share amounts)

	Year Ended December 31,
	2014			2013			2012
Net sales	$	403,298		$	359,445		$	388,902
Cost of sales		362,722			299,209			329,794
Gross profit		40,576			60,236			59,108
Selling, general and administrative expense		24,316			22,701			27,822
Impairment of Tubular Products goodwill		16,066			—			—
Operating income		194			37,535			31,286
Other income (expense)		108			(289	)		(339	)
Interest income		466			409			147
Interest expense		(2,290	)		(3,621	)		(5,205	)
Income (loss) before income taxes		(1,522	)		34,034			25,889
Income tax expense		4,651			12,358			8,388
Income (loss) from continuing operations	$	(6,173	)	$	21,676		$	17,501
Discontinued operations:
Loss from operations of discontinued business		(2,151	)		(9,583	)		(4,124	)
Impairment of fixed assets		—			(27,500	)		—
Loss on sale of business		(13,497	)		—			—
Income tax benefit		(3,934	)		(14,484	)		(2,867	)
Loss on discontinued operations		(11,714	)		(22,599	)		(1,257	)
Net Income (loss)	$	(17,887	)	$	(923	)	$	16,244
Basic earnings (loss) per share
Continuing operations	$	(0.65	)	$	2.29		$	1.87
Discontinued operations		(1.23	)		(2.39	)		(0.14	)
Net Income (loss) per share	$	(1.88	)	$	(0.10	)	$	1.73
Diluted earnings (loss) per share
Continuing operations	$	(0.65	)	$	2.27		$	1.85
Discontinued operations		(1.23	)		(2.37	)		(0.13	)
Net Income (loss) per share assuming dilution	$	(1.88	)	$	(0.10	)	$	1.72
Shares used in per share calculations:
Basic		9,515			9,445			9,377
Diluted		9,515			9,534			9,445

The accompanying notes are an integral part of these consolidated financial statements.

F-3

NORTHWEST PIPE COMPANY

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(In thousands)

	Year Ended December 31,
	2014			2013			2012
Net income (loss)	$	(17,887	)	$	(923	)	$	16,244
Other comprehensive income (loss):
Pension liability adjustment, net of tax		(587	)		913			138
Deferred gain (loss) on cash flow derivatives, net of tax		15			99			(99	)
Other comprehensive income (loss)		(572	)		1,012			39
Comprehensive income (loss)	$	(18,459	)	$	89		$	16,283

The accompanying notes are an integral part of these consolidated financial statements

F-4

NORTHWEST PIPE COMPANY AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(Dollar amounts in thousands, except share and per share amounts)

	December 31,
	2014			2013
Assets
Current assets:
Cash and cash equivalents	$	527		$	588
Trade and other receivables, less allowance for doubtful accounts of $755 and $685		58,310			72,470
Costs and estimated earnings in excess of billings on uncompleted contracts		45,847			50,468
Inventories		72,779			110,392
Refundable income taxes		5,031			1,073
Deferred income taxes		5,487			6,208
Prepaid expenses and other		7,258			2,381
Total current assets		195,239			243,580
Property and equipment, net		132,595			143,061
Goodwill		5,282			25,760
Other assets		18,766			21,058
Total assets	$	351,882		$	433,459
Liabilities and Stockholders’ Equity
Current liabilities:
Current portion of long-term debt	$	—		$	5,714
Current portion of capital lease obligations		2,170			2,216
Accounts payable		15,480			21,731
Accrued liabilities		8,752			10,302
Deferred revenue		319			4,892
Billings in excess of costs and estimated earnings on uncompleted contracts		2,835			3,368
Total current liabilities		29,556			48,223
Borrowings on line of credit		45,587			87,919
Long-term debt, less current portion		—			643
Capital lease obligations, less current portion		225			5,679
Deferred income taxes		14,015			11,842
Pension and other long-term liabilities		16,864			17,303
Total liabilities		106,247			171,609
Commitments and contingencies (Note 13)
Stockholders’ equity:
Preferred stock, $.01 par value, 10,000,000 shares authorized, none issued or outstanding		—			—
Common stock, $.01 par value, 15,000,000 shares authorized, 9,520,067 and 9,449,299 shares issued and outstanding		95			94
Additional paid-in-capital		116,802			114,559
Retained earnings		130,571			148,458
Accumulated other comprehensive loss		(1,833	)		(1,261	)
Total stockholders’ equity		245,635			261,850
Total liabilities and stockholders’ equity	$	351,882		$	433,459

The accompanying notes are an integral part of these consolidated financial statements.

F-5

NORTHWEST PIPE COMPANY AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(Dollar amounts in thousands)

	Common Stock				Additional Paid In Capital			Retained Earnings			Accumulated Other Comprehensive (Loss) Income			Total Stockholders’ Equity
	Shares		Amount
Balances, December 31, 2011		9,353,201	$	94	$	109,348		$	133,137		$	(2,312	)	$	240,267
Net income		—		—		—			16,244			—			16,244
Other comprehensive (loss) income:
Foreign currency cash flow hedge, net of tax benefit of $94		—		—		—			—			(99	)		(99	)
Pension liability adjustment, net of tax expense of $50		—		—		—			—			138			138
Issuance of common stock under stock compensation plans		29,793		—		(175	)		—			—			(175	)
Tax benefit from stock compensation plans		—		—		9			—			—			9
Stock-based compensation expense		—		—		3,048			—			—			3,048
Balances, December 31, 2012		9,382,994		94		112,230			149,381			(2,273	)		259,432
Net income		—		—		—			(923	)		—			(923	)
Other comprehensive (loss) income:
Foreign currency cash flow hedge, net of tax expense of $59		—		—		—			—			99			99
Pension liability adjustment, net of tax expense of $540		—		—		—			—			913			913
Issuance of common stock under stock compensation plans		66,305		—		(730	)		—			—			(730	)
Tax deficiency from stock compensation plans		—		—		(1	)		—			—			(1	)
Stock-based compensation expense		—		—		3,060			—			—			3,060
Balances, December 31, 2013		9,449,299		94		114,559			148,458			(1,261	)		261,850
Net loss		—		—		—			(17,887	)		—			(17,887	)
Other comprehensive income:
Foreign currency cash flow hedge, net of tax expense of $9		—		—		—			—			15			15
Pension liability adjustment, net of tax benefit of $285		—		—		—			—			(587	)		(587	)
Issuance of common stock under stock compensation plans		70,768		1		(1,256	)		—			—			(1,255	)
Tax benefit from stock compensation plans		—		—		553			—			—			553
Stock-based compensation expense		—		—		2,946			—			—			2,946
Balances, December 31, 2014		9,520,067	$	95	$	116,802		$	130,571		$	(1,833	)	$	245,635

The accompanying notes are an integral part of these consolidated financial statements.

F-6

NORTHWEST PIPE COMPANY AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Dollar amounts in thousands)

	Year Ended December 31,
	2014			2013			2012
Cash flows from operating activities:
Net income (loss)	$	(17,887	)	$	(923	)	$	16,244
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation		13,606			13,272			16,240
Impairment of goodwill		16,066			—			—
Loss on sale of business		13,497			—			—
Impairment of fixed assets		—			27,500			—
Amortization of intangible assets		540			27			27
Amortization of debt issuance costs		377			634			1,318
Provision for doubtful accounts		70			(1,063	)		98
Deferred income taxes		2,894			(7,994	)		(4,120	)
Loss on disposal of property and equipment		489			256			998
Stock-based compensation expense		2,946			3,060			3,048
Excess tax benefit from stock compensation plans		(553	)		—			—
Adjustments to contingent consideration		(1,746	)		—			—
Other, net		12			54			216
Changes in operating assets and liabilities, net of acquired assets and assumed liabilities
Trade and other receivables, net		7,984			(24,212	)		28,298
Costs and estimated earnings in excess of billings on uncompleted contracts, net		4,088			19,736			(36,621	)
Inventories		6,039			8,261			(5,582	)
Refundable income taxes		(3,405	)		(1,073	)		—
Prepaid expenses and other assets		754			307			5,480
Accounts payable		(5,273	)		1,374			(310	)
Deferred revenue		(4,573	)		(3,901	)		7,764
Accrued and other liabilities		(881	)		(15,226	)		11,392
Net cash provided by operating activities		35,044			20,089			44,490
Cash flows from investing activities:
Additions to property and equipment		(14,289	)		(28,447	)		(16,789	)
Proceeds from sale of business		29,791			—			—
Acquisition of businesses, net of cash acquired		—			(15,689	)		—
Proceeds from sale of property and equipment		8			1,711			1,072
Issuance of notes receivable		—			(5,700	)		(1,000	)
Restricted cash		—			—			(2,640	)
Other investing activities		31			(126	)		60
Net cash provided by (used in) investing activities		15,541			(48,251	)		(19,297	)
Cash flows from financing activities:
Proceeds from issuance of common stock		28			72			37
Tax withholdings related to net share settlements of restricted share awards and performance shares		(1,283	)		(802	)		(212	)
Excess tax benefit from stock compensation plans		553			—			—
Payments on long-term debt		(6,357	)		(5,714	)		(5,714	)
Borrowings on line of credit		230,581			220,721			119,000
Repayments on line of credit		(272,913	)		(180,334	)		(133,468	)
Payments of debt issuance costs		—			—			(1,599	)
Payments on capital lease obligations		(1,255	)		(5,239	)		(3,373	)
Net cash (used in) provided by financing activities		(50,646	)		28,704			(25,329	)
Change in cash and cash equivalents		(61	)		542			(136	)
Cash and cash equivalents, beginning of period		588			46			182
Cash and cash equivalents, end of period	$	527		$	588		$	46
Supplemental disclosure of cash flow information:
Cash paid during the period for interest, net of amounts capitalized	$	2,271		$	3,277		$	4,353
Cash paid during the period for income taxes
(net of refunds of $393, $311, and $1,834)	$	1,982		$	9,592		$	5,007
Non-cash investing and financing activities:
Escrow account related to capital lease financing	$	—		$	—		$	898
Accrued property and equipment purchases	$	1,243		$	1,656		$	2,777
Capital lease additions	$	804		$	—		$	142

The accompanying notes are an integral part of these consolidated financial statements.

F-7

NORTHWEST PIPE COMPANY AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:

The Company operates in two business segments, Water Transmission and Tubular Products. The Water Transmission segment primarily produces steel pipeline systems for use in drinking water infrastructure, and has eight manufacturing facilities, located in Portland, Oregon; Denver, Colorado; Adelanto, California; Parkersburg, West Virginia; Saginaw, Texas; St. Louis, Missouri; Salt Lake City, Utah and Monterrey, Mexico. The Tubular Products segment primarily produces steel line pipe products for energy applications, and has a manufacturing facility located in Atchison, Kansas.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company bases its estimates on historical experience and on various assumptions that are believed to be reasonable under the circumstances at that time. On an on-going basis, the Company evaluates all of its estimates, including those related to revenue recognition, allowance for doubtful accounts, goodwill, long-lived assets, including depreciation and amortization, inventories, income taxes, and litigation and other contingencies. Actual results could differ from those estimates under different assumptions or conditions.

Basis of Consolidation and Presentation

The consolidated financial statements include the accounts of Northwest Pipe Company and its subsidiaries over which the Company exercises control as of the financial statement date. Intercompany accounts and transactions have been eliminated.

On March 30, 2014, the Company completed the sale of substantially all of the assets and liabilities associated with its oil country tubular goods (“OCTG”) business, as discussed in more detail below. The Company’s results of operations for its disposed OCTG business have been presented as discontinued operations for all periods presented within the consolidated statements of operations.

Certain amounts from the prior year financial statements have been reclassified in order to conform to the current year presentation.

Lucid Energy Inc., over which the Company exercises significant influence but does not control, is accounted for under the cost method of accounting. Lucid Energy is a clean energy company based in Portland, Oregon. The carrying value of our investment is $0 at both December 31, 2014 and 2013 due to a history of net losses by Lucid Energy.

Business Acquisitions and Disposals

The Company allocates the fair value of purchase consideration to the tangible assets acquired, liabilities assumed and intangible assets acquired based on their estimated fair values. The excess of the fair value of purchase consideration over the fair values of these identifiable assets and liabilities is recorded as goodwill. Such valuations require management to make significant estimates and assumptions, especially with respect to intangible assets. Contingent consideration is calculated and recorded at the date of the acquisition. During the measurement period, which does not exceed one year from the acquisition date, the Company may record adjustments to the assets acquired and liabilities assumed as a result of information received regarding the valuation of assets and liabilities after the acquisition date, with the corresponding offset to goodwill. Upon the conclusion of the measurement period, any subsequent adjustments are recorded to earnings.

F-8

Disposal of OCTG Business

On March 30, 2014 the Company completed the sale of substantially all of the assets and liabilities associated with its OCTG business, which was conducted by the Company at its manufacturing facilities in Bossier City, Louisiana and Houston, Texas, excluding the real property located in Houston, Texas. These facilities were previously included within the Company’s Tubular Products Group. Total consideration of $42.7 million was paid by the buyer, resulting in a loss on sale of $13.5 million. The calculation of the loss on sale included a write down of $4.4 million of goodwill. Of the proceeds received, $4.3 million was placed in escrow to secure the Company’s indemnification obligations under the purchase agreement, $5.0 million was used to repay capital leases related to and secured by certain assets at the Bossier City, Louisiana manufacturing facility, $1.8 million was used to pay for transaction costs and $1.8 million was used to pay a net working capital adjustment made in September 2014, resulting in net proceeds of $29.8 million.

The table below presents the components of the balance sheet accounts associated with the OCTG business as of December 31, 2013 (in thousands). All sold assets and liabilities were transferred to the buyer as of March 30, 2014.

	December 31, 2013
Assets:
Trade and other receivables, net	$	11,673
Inventories		44,668
Prepaid expenses and other		206
Total current assets		56,547
Property and equipment, net		11,509
Total assets		68,056
Liabilities:
Current portion of capital lease obligations		1,289
Accounts payable		3,013
Accrued liabilities		1,466
Deferred revenue		4,505
Total current liabilities		10,273
Capital lease obligations, less current portion		4,075
Total liabilities	$	14,348

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The table below presents the operating results for the Company’s discontinued operations (in thousands). These operating results for 2014, 2013 and 2012 do not necessarily reflect what they would have been had the OCTG business not been classified as a discontinued operation.

	Year Ended December 31,
	2014			2013			2012
Net sales	$	22,225		$	116,111			135,601
Cost of sales		23,881			123,888			138,511
Gross loss		(1,656	)		(7,777	)		(2,910	)
Selling, general, and administrative		396			1,509			816
Impairment of fixed assets		—			27,500			—
Operating loss		(2,052	)		(36,786	)		(3,726	)
Loss on sale of business		(13,497	)		—			—
Interest income		—			47			13
Interest expense		(99	)		(344	)		(411	)
Loss before income taxes		(15,648	)		(37,083	)		(4,124	)
Income tax benefit		(3,934	)		(14,484	)		(2,867	)
Net loss	$	(11,714	)	$	(22,599	)	$	(1,257	)

Acquisition of Permalok Corporation

On December 30, 2013 the Company acquired 100% of the outstanding shares of capital stock of Permalok Corporation, a fabricator of steel piping utilizing the Permalok interlocking pipe joining system. Permalok’s rolled and welded steel pipe products provide an alternate joint solution which complements and expands the Company’s product offerings in the Water Transmission segment. Total consideration (net of cash received) of $15.7 million was paid to the owners of the business, resulting in the recording of $5.3 million of goodwill, none of which is expected to be deductible for tax purposes. The goodwill recorded is attributed to synergies expected from integrating operations of Permalok with the rest of the Company’s Water Transmission business. The goodwill is included within the Water Transmission Group for purposes of segment reporting. Contingent consideration of $2.7 million and $4.4 million was recorded in other long-term liabilities as of December 31, 2014 and December 31, 2013, which represents the probability weighted contingent payment as a percentage of high, mid, and low revenue projections for years 2014, 2015 and 2016. There were no payments on the contingent consideration obligation in 2015 for 2014 revenues.

Pro forma results of operations related to our acquisitions during the year ended December 31, 2013 have not been presented because they are not material to our Consolidated Statements of Operations, either individually or in the aggregate.

Cash and Cash Equivalents

Cash and cash equivalents consist of cash and short term highly liquid investments with remaining maturities of three months or less when purchased. At times, the Company will have outstanding checks in excess of related bank balances (a book overdraft). If this occurs, the amount of the book overdraft will be reclassified to accounts payable, and changes in the book overdraft will be reflected as a component of operating activities in the consolidated statement of cash flows. The Company had a book overdraft of $0.9 million at December 31, 2014. There was not a book overdraft at December 31, 2013.

Receivables and Allowance for Doubtful Accounts

Trade receivables are reported on the consolidated balance sheet net of any doubtful accounts. The Company maintains allowances for estimated losses resulting from the inability of its customers to make required

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payments or from contract disputes. The amounts of such allowances are based on Company history and management’s judgment. At least monthly, the Company reviews past due balances to identify the reasons for non-payment. The Company will write off a receivable account once the account is deemed uncollectible. The Company believes the reported allowances at December 31, 2014 and 2013 are adequate. If the customers’ financial conditions were to deteriorate resulting in their inability to make payments, or if contract disputes were to escalate, additional allowances may need to be recorded which would result in additional expenses being recorded for the period in which such determination was made.

Customer Prepayments

Contractual terms may require prepayment of a portion of a contract value by the customer in advance of completing the work. Advanced deposits are recorded in accrued liabilities and are offset by invoices as work is performed on the contract. There were no advanced deposits at either December 31, 2014, or December 31, 2013.

Inventories

Inventories are stated at the lower of cost or market. Raw material inventories of steel are stated at cost, either on a specific identification basis or on an average cost basis. All other raw material inventories, as well as supplies, are stated on an average cost basis. Finished goods are stated at cost using the first-in, first-out method of accounting.

Property and Equipment

Property and equipment is stated at cost. Maintenance and repairs are expensed as incurred, and costs of new equipment and buildings, as well as costs of expansions or refurbishment of existing equipment and buildings, including interest where applicable, are capitalized. Depreciation and amortization are determined by the units of production method for most equipment and by the straight-line method for the remaining assets based on the estimated useful lives of the related assets. Estimated useful lives by major classes of property and equipment are as follows: Land improvements (15–30 years); Buildings (20–40 years); Machinery and equipment (3–30 years). Depreciation expense calculated under the units of production method may be less than, equal to, or greater than depreciation expense calculated under the straight-line method due to variances in production levels. Upon disposal, costs and related accumulated depreciation of the assets are removed from the accounts and resulting gains or losses are reflected in operating expenses. The Company leases certain equipment under long-term capital leases, which are being amortized on a straight-line basis over the shorter of its useful life or the lease term.

The Company assesses impairment of property and equipment whenever changes in circumstances indicate that the carrying values of the asset or asset group(s) may not be recoverable. The asset group is the lowest level at which identifiable cash flows are largely independent of the cash flows of other groups of assets or liabilities. The recoverable value of long-lived asset group is determined by estimating future undiscounted cash flows using assumptions about the expected future operating performance of the Company.

In conjunction with the preparation of the financial statements for the year ended December 31, 2013, the Company determined that an impairment triggering event as defined in ASC 360-10 had occurred for the assets located at its Bossier City, Louisiana facility. See Note 4, “Property and Equipment” for further discussion of the property and equipment impairment recorded during 2013.

Goodwill and Intangible Assets

Goodwill represents the excess of purchase price over the assigned fair values of the net assets in connection with an acquisition. Goodwill is reviewed for impairment annually at December 31 or whenever events occur or circumstances change that indicates goodwill may be impaired. Goodwill is tested for impairment at the reporting unit level. A reporting unit is an operating segment or one level below an operating segment (also known as a

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component). Our reporting units are equivalent to our operating segments as the individual components meet the criteria for aggregation.

Intangible assets consist primarily of customer relationships, patents, and trade names and trademarks recorded as the result of acquisition activity. Intangible assets are amortized using the straight-line method over estimated useful lives ranging from 3 to 15 years.

See Note 5, “Goodwill and Intangible Assets” for further discussion of the Company’s goodwill and intangible asset balances.

Workers Compensation Insurance

The Company is self-insured, or maintains high deductible policies, for losses and liabilities associated with workers compensation claims. Losses are accrued based upon the Company’s estimates of the aggregate liability for claims incurred using historical experience and certain actuarial assumptions followed in the insurance industry.

Accrued Liabilities

The Company’s accrued liabilities include payroll related liabilities, reserves for health and workers’ compensation claims, property and sales tax payable, and other liabilities expected to be paid within one year of the balance sheet date. At both December 31, 2014 and 2013, accrued vacation payable of $2.2 million was included in accrued liabilities.

Pension Benefits

The Company has two defined benefit pension plans that have been frozen since 2001. The Company funds these plans to cover current plan costs plus amortization of the unfunded plan liabilities. To record these obligations, management uses estimates relating to investment returns, mortality, and discount rates. Management reviews all of these assumptions on an annual basis.

Derivative Instruments

The Company conducts business in foreign countries, and, from time to time, settles transactions in foreign currencies. The Company has established a program that utilizes foreign currency forward contracts to offset the risk associated with the effects of certain foreign currency exposures, typically arising from sales contracts denominated in Canadian currency. Foreign currency forward contracts are consistent with the Company’s strategy for financial risk management. The Company utilizes cash flow hedge accounting treatment for qualifying foreign currency forward contracts. Instruments that do not qualify for cash flow hedge accounting treatment are remeasured at fair value at each balance sheet date and resulting gains and losses are recognized in net income (loss).

Foreign Currency Transactions

Assets and liabilities subject to foreign currency fluctuations are translated into United States dollars at the period-end exchange rate, and revenue and expenses are translated at exchange rates representing an average for the period. Translation adjustments from designated hedges are included in accumulated other comprehensive loss as a separate component of stockholders’ equity. Gains or losses on all other foreign currency transactions are recognized in the consolidated statement of operations. The functional currency of the Company’s Mexican operations is the United States dollar.

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Revenue Recognition

Revenue from construction contracts in the Company’s Water Transmission Group is recognized on the percentage-of-completion method. For a majority of contracts, revenue is measured by the costs incurred to date as a percentage of the estimated total costs of each contract (cost-to-cost method). For a small number of contracts, revenue is measured using units of delivery as progress is best estimated by the number of units delivered under the contract. Contract costs include all direct material and labor costs and those indirect costs related to contract performance, such as indirect labor, supplies, tools, repairs and depreciation. Selling, general and administrative costs are charged to expense as incurred. The cost of steel is recognized as a project cost when the steel is introduced into the manufacturing process. Estimated total costs of each contract are reviewed on a monthly basis by project management and operations personnel for all active projects. All cost revisions that result in the gross profit as a percent of sales increasing or decreasing by more than two percent are reviewed by senior management personnel.

The Company begins recognizing revenue on a project when persuasive evidence of an arrangement exists, recoverability is reasonably assured, and project costs are incurred. Costs may be incurred before the Company has persuasive evidence of an arrangement. In those cases, if recoverability from that arrangement is probable, the project costs are deferred and revenue recognition is delayed.

Changes in job performance, job conditions and estimated profitability, including those arising from contract change orders, contract penalty provisions, foreign currency exchange rate movements, changes in raw materials costs, and final contract settlements may result in revisions to estimates of revenue, costs and income and are recognized in the period in which the revisions are determined. Provisions for losses on uncompleted contracts are made in the period such losses are known.

Revenue from the Company’s Tubular Products Group is recognized when all four of the following criteria have been satisfied: persuasive evidence of an arrangement exists, the price is fixed or determinable, delivery has occurred, and collectability is reasonably assured. Deferred revenue is recorded when the manufacturing process is complete and customers are invoiced prior to physical delivery of the product.

Income Taxes

Income taxes are recorded using an asset and liability approach that requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in the Company’s financial statements or tax returns. Valuation allowances are established when necessary to reduce deferred income tax assets to the amount expected to be realized. The determination of the provision for income taxes requires significant judgment, the use of estimates and the interpretation and application of complex tax laws. The provision for income taxes primarily reflects a combination of income earned and taxed in the various United States federal and state and, to a lesser extent, foreign jurisdictions. Jurisdictional tax law changes, increases or decreases in permanent differences between book and tax items, accruals or adjustments of accruals for unrecognized tax benefits or valuation allowances, and the change in the mix of earnings from these taxing jurisdictions all affect the overall effective tax rate.

The Company records tax reserves for federal, state, local and international exposures relating to periods subject to audit. The development of reserves for these exposures requires judgments about tax issues, potential outcomes and timing, and is a subjective estimate. The Company assesses tax positions and records tax benefits for all years subject to examination based upon management’s evaluation of the facts, circumstances, and information available at the reporting dates. For those tax positions where it is more-likely-than-not that a tax benefit will be sustained, the largest amount of tax benefit with a greater than 50% likelihood of being realized upon settlement with a tax authority that has full knowledge of all relevant information has been recorded. For those tax positions where it is not more-likely-than-not that a tax benefit will be sustained, no tax benefit has been recognized in the financial statements.

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Accumulated Other Comprehensive Loss

Accumulated other comprehensive loss includes unrealized gains and losses on derivative instruments related to the effective portion of cash flow hedges and changes in the funded status of the defined benefit pension plans, both net of the related income tax effect. For further information, refer to Note 15, “Accumulated Other Comprehensive Loss”.

Earnings (Loss) per Share

Earnings (loss) per basic and diluted weighted average common shares outstanding was calculated as follows for the years ended December 31 (in thousands, except per share data):

	2014			2013			2012
Income (loss) from continuing operations	$	(6,173	)	$	21,676		$	17,501
Loss from discontinued operations		(11,714	)		(22,599	)		(1,257	)
Net income (loss)	$	(17,887	)	$	(923	)	$	16,244
Basic weighted-average common shares outstanding		9,515			9,445			9,377
Effect of potentially dilutive common shares(1)		—			89			68
Diluted weighted-average common shares outstanding		9,515			9,534			9,445
Earnings (loss) per basic common share:
Continuing operations	$	(0.65	)	$	2.29		$	1.87
Discontinued operations		(1.23	)		(2.39	)		(0.14	)
Total	$	(1.88	)	$	(0.10	)	$	1.73
Earnings (loss) per diluted common share:
Continuing operations	$	(0.65	)	$	2.27		$	1.85
Discontinued operations		(1.23	)		(2.37	)		(0.13	)
Total	$	(1.88	)	$	(0.10	)	$	1.72
Antidilutive shares excluded from net earnings per diluted common share calculation		65			93			92

(1) Represents the effect of the assumed exercise of stock options and the vesting of restricted stock units and performance stock awards, based on the treasury stock method.

Concentrations of Credit Risk

Financial instruments, which potentially subject the Company to concentrations of credit risk, consist principally of trade receivables, derivative contracts, the escrow account related to the sale of the OCTG business, and deferred compensation plan assets. Trade receivables generally represent a large number of customers, including municipalities, manufacturers, distributors and contractors, dispersed across a wide geographic base. At December 31, 2014, one customer had a balance in excess of 10% of total accounts receivable. At December 31, 2013, two customers had a balance in excess of 10% of total accounts receivable. Derivative contracts are with a financial institution whose short-term investments are rated A-1 by Standard and Poor’s. The Company’s deferred compensation plan assets, also included in other assets, are invested in a diversified portfolio of stock and bond mutual funds.

Share-based Compensation

The Company recognizes the compensation cost of employee and director services received in exchange for awards of equity instruments based on the grant date estimated fair value of the awards. Share-based compensation cost is recognized over the period during which the employee or director is required to provide service in exchange for the award, and as forfeitures occur, the associated compensation cost recognized to date is reversed.

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The Company estimates the fair value of Restricted Stock Units (“RSUs”) and Performance Stock Awards (“PSAs”) using the value of the Company’s stock on the date of grant, with the exception of market-based PSAs, for which a Monte Carlo simulation model is used. The Monte Carlo simulation model requires the use of subjective and complex assumptions including the price volatility of the underlying stock. The expected stock price volatility assumption was determined using the historical volatility of the Company’s and a comparator group of companies’ stock over the most recent historical period equivalent to the expected life. The Monte Carlo simulation model calculates many potential outcomes for an award and estimates fair value based on the most likely outcome.

See Note 11, “Share-based Compensation Plans” for further discussion of the Company’s share-based compensation.

Recent Accounting and Reporting Developments

Accounting Changes

In April 2014, the FASB issued ASU 2014-08, which changes the criteria for when the disposal of a component of an entity may be presented as discontinued operations. The guidance requires that the disposal be considered a strategic shift (such as the disposal of a major geographical area, a major line of business, a major equity method investment, or other major part of an entity) which will have a major effect on a reporting entity’s operating and financial results in order to be presented as discontinued operations. Disposals which qualify for discontinued operations presentation will require expanded disclosures. The Company adopted this guidance on January 1, 2015 for any future disposals qualifying for discontinued operations presentation.

In July 2013, the FASB issued ASU 2013-11, which clarified guidance on the presentation of unrecognized tax benefits. The guidance requires that an unrecognized tax benefit, or portion of an unrecognized tax benefit, be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward when such items exist in the same taxing jurisdiction. The Company adopted this guidance on January 1, 2014 as required, and the effect was not material.

Recent Accounting Standards

In August 2014, the FASB issued Accounting Standards Update (“ASU”) No. 2014-15, “Presentation of Financial Statements—Going Concern.” This standard requires management to evaluate for each annual and interim reporting period whether it is probable that the reporting entity will not be able to meet its obligations as they become due within one year after the date that the financial statements are issued. If the entity is in such a position, the standard provides for certain disclosures depending on whether or not the entity will be able to successfully mitigate its going concern status. This guidance is effective for annual periods ending after December 15, 2016 and interim periods within annual periods beginning after December 15, 2016. Early application is permitted. The Company does not expect a material impact to the Company’s financial condition, results of operations or cash flows from the adoption of this guidance.

In May 2014, the FASB issued Accounting Standards Update (“ASU”) No. 2014-09, “Revenue from Contracts with Customers,” which will replace most existing revenue recognition guidance in accordance with U.S. GAAP. The core principle of the ASU is that an entity should recognize revenue for the transfer of goods or services equal to the amount that it expects to be entitled to receive for those goods or services. The ASU requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments. The ASU will be effective for the Company beginning January 1, 2017, including interim periods in 2017, and allows for both retrospective and prospective methods of adoption. The Company is in the process of determining the method of adoption and assessing the impact of this ASU on its consolidated financial statements.

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2. COSTS AND ESTIMATED EARNINGS IN EXCESS OF BILLINGS ON UNCOMPLETED CONTRACTS AND BILLINGS IN EXCESS OF COSTS AND ESTIMATED EARNINGS:

Costs and estimated earnings in excess of billings on uncompleted contracts represents revenue earned under the percentage-of-completion method but not yet billable based on the terms of the contracts. These amounts are billed based on the terms of the contracts, which include achievement of milestones, partial shipments or completion of the contracts. Billings in excess of costs and estimated earnings on uncompleted contracts represents amounts billed based on the terms of the contracts in advance of costs incurred and revenue earned.

	December 31,
	2014			2013
	(in thousands)
Costs incurred on uncompleted contracts	$	265,552		$	182,709
Estimated earnings		53,744			37,438
		319,296			220,147
Less billings to date		(276,284	)		(173,047	)
	$	43,012		$	47,100
Amounts are presented in the Consolidated Balance Sheets as follows:
Costs and estimated earnings in excess of billings on uncompleted contracts	$	45,847		$	50,468
Billings in excess of costs and estimated earnings on uncompleted contracts		(2,835	)		(3,368	)
	$	43,012		$	47,100

3. INVENTORIES:

Inventories are stated at the lower of cost or market and consist of the following (in thousands):

	December 31,
	2014		2013
Short-term inventories:
Raw materials	$	48,005	$	52,598
Work-in-process		1,741		4,902
Finished goods		20,663		49,351
Supplies		2,370		3,541
		72,779		110,392
Long-term inventories:
Finished goods		1,214		1,249
Total inventories	$	73,993	$	111,641

Long-term inventories are recorded in other assets.

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4. PROPERTY AND EQUIPMENT:

Property and equipment consists of the following (in thousands):

	December 31,
	2014			2013
Land and improvements	$	23,689		$	24,240
Buildings		42,368			42,763
Machinery and equipment		140,578			136,581
Equipment under capital lease		6,001			14,196
Construction in progress		4,183			14,115
		216,819			231,895
Less accumulated depreciation and amortization		(84,224	)		(88,834	)
Property and equipment, net	$	132,595		$	143,061

Depreciation expense, which includes amortization of capital lease assets, was $13.6 million, $13.3 million, and $16.2 million for the years ended December 31, 2014, 2013, and 2012, respectively. Accumulated amortization associated with property and equipment under capital leases was $4.2 million and $4.9 million at December 31, 2014 and 2013, respectively.

Due to the impairment of its Tubular Products Group goodwill (see Note 5, “Goodwill and Intangible Assets”), the Company determined that an impairment triggering event as defined in ASC 360-10 had occurred for the asset groups included within the segment. The Company performed a recoverability test for each asset group, in which the carrying value of the asset group was compared against associated undiscounted future cash flows. This analysis determined that the carrying values of the asset groups were recoverable at December 31, 2014.

In conjunction with the preparation of its financial statements for the year ended December 31, 2013, the Company determined that an impairment triggering event as defined in ASC 360-10 had occurred for the assets located at its Bossier City, Louisiana facility due to increased competition in the OCTG market, pricing pressures from imported pipe, and growing inventory balances. This facility was included within our Tubular Products Group. The Company performed a recoverability test in which the carrying values of the asset groups were compared against the probability weighted undiscounted future cash flows of various future scenarios using Company-specific assumptions. The analysis determined that the carrying value of the asset group was not recoverable as the undiscounted cash flows were less than the carrying value of the asset group. The Company then compared the carrying value to the fair market value of the asset group. Management determined fair value using third-party appraisals, as discussed in Note 8. This analysis resulted in an impairment charge of $27.5 million, which is included in discontinued operations for 2013 as the related assets were sold as part of the sale of the OCTG business in March 2014.

5. GOODWILL AND INTANGIBLE ASSETS

Goodwill represents the excess of purchase price over the assigned fair values of the assets and liabilities assumed in conjunction with an acquisition. As discussed in Note 1, goodwill is reviewed for impairment annually at December 31 or whenever events occur or circumstances change that indicates goodwill may be impaired.

In evaluating goodwill, the Company looks at the long-term prospects for the reporting unit and recognizes that current performance may not be the best indicator of future prospects or value, which requires management judgment. The income approach is based upon projected future after-tax cash flows discounted to present value using factors that consider the timing and risk associated with the future after-tax cash flows. The market

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approach is based upon historical and/or forward-looking measures using multiples of revenue or EBITDA. The Company utilizes a weighted average of the income and market approaches, with a heavier weighting on the income approach because of the relatively limited number of comparable entities for which relevant multiples are available. If the carrying value of the reporting unit exceeds its calculated enterprise value, then the Company continues to assess the fair value of individual assets and liabilities, other than goodwill. The difference between the reporting unit enterprise value and the fair value of its identifiable net assets is the implied fair value of the reporting unit’s goodwill. A goodwill impairment loss is recorded for the difference between the implied fair value and its carrying value.

Goodwill related to the Company’s Tubular Products Group of $16.1 million was quantitatively evaluated with consideration of the income and market approaches as applicable. Due to negative impacts on our Tubular Products business as a result of the worldwide turmoil in crude oil markets, which became significant in the fourth quarter of 2014, we concluded that there was no implied fair value of the Tubular Products Group goodwill and that it should be completely written off as of December 31, 2014.

Goodwill related to the Company’s Water Transmission Group of $5.3 million was quantitatively evaluated with consideration of the income and market approaches as applicable. We concluded that Water Transmission Group goodwill was not impaired as of December 31, 2014.

Goodwill assigned to the Company’s Water Transmission and Tubular Products Groups is as follows (in thousands):

	Water Transmission		Tubular Products			Total
Goodwill balance, December 31, 2012	$	—	$	20,478		$	20,478
Additions		5,282		—			5,282
Goodwill balance, December 31, 2013		5,282		20,478			25,760
Adjustment for the sale of OCTG business		—		(4,412	)		(4,412	)
Fourth quarter impairment		—		(16,066	)		(16,066	)
Goodwill balance, December 31, 2014	$	5,282	$	—		$	5,282

The Company had allocated $4.4 million of goodwill to the two OCTG plants disposed in March 2014, and recorded the related write-off of that goodwill as part of the loss on sale of business in the Company’s consolidated statement of operations.

Intangible Assets

Intangible assets consist of the following as of December 31, 2014 (in thousands):

	Gross Carrying Amount		Accumulated Amortization			Intangible Assets, Net		Remaining Weighted-Average Amortization Period (in years)
Customer relationships	$	1,378	$	(138	)	$	1,240		9.0
Patents		1,162		(232	)		930		4.0
Trade names and trademarks		1,132		(75	)		1,057		14.0
Other (1)		295		(77	)		218		2.9
Total	$	3,967	$	(522	)	$	3,445		8.8

(1) Other intangibles consist of favorable lease contracts and non-compete agreements

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The Company recorded $0.5 million amortization expense in 2014 and zero amortization in 2013 and 2012. The estimated amortization expense for the next five fiscal years is as follows (in thousands):

2015		523
2016		523
2017		495
2018		459
2019		213
Thereafter		1,232
	$	3,445

6. LINE OF CREDIT AND LONG-TERM DEBT:

Line of Credit

At December 31, 2014, the Company had $45.6 million of borrowings on its Credit Agreement. The Credit Agreement allows the Company to borrow up to $165 million, subject to compliance with financial covenants. At December 31, 2014, the Company had $61.7 million available to borrow in addition to its then-outstanding borrowings under the Credit Agreement while remaining in compliance with the Company’s financial covenants.

Under the Credit Agreement, the Company’s borrowings bear interest at LIBOR plus 1.75% to 2.75%, or the lending institution’s prime rate plus 0.75% to 1.75%. The Company was able to borrow at LIBOR plus 2.0% at December 31, 2014. The Credit Agreement bears interest at a weighted average rate of 2.43% at December 31, 2014.

At December 31, 2013, the Company had $87.9 million of borrowings on its Credit Agreement. The Company was able to borrow at LIBOR plus 2.0% at December 31, 2013. The Credit Agreement bore interest at a weighted average rate of 2.69% at December 31, 2013.

The Credit Agreement expires on October 24, 2017. The Company expects to extend, renew, or replace its line of credit borrowings, to the extent required by working capital or other borrowing needs. Therefore, borrowings on the line of credit are classified as noncurrent as of December 31, 2014 and 2013. Borrowings under the Credit Agreement are collateralized by substantially all of our personal property.

Long-Term Debt

At December 31, 2013, the Company had remaining principal on Term Notes of $6.4 million. The Term Notes originated in 2008 to 2009, bore interest at 9.07% to 10.50%, and were collateralized by accounts receivable, inventory, and certain equipment. As of June 30, 2014, the Company had paid all of the principal outstanding on its Term Notes.

Interest expense for continuing operations from Line of Credit borrowings, Term Notes, and capital leases was $2.3 million, net of amounts capitalized of $0.2 million in 2014, $3.6 million, net of amounts capitalized of $0.4 million in 2013, and $5.2 million, net of amounts capitalized of $0.2 million in 2012.

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7. LEASES:

Capital Leases

The Company leases certain equipment used in the manufacturing process. The future minimum payments under the Company’s capital leases are as follows (in thousands):

2015	$	2,283
2016		169
2017		68
2018		—
2019		—
Thereafter		—
Total minimum lease payments		2,520
Amount representing interest		125
Present value of minimum lease payments with average interest rates of 9.66%		2,395
Current portion of capital lease obligation		2,170
Capital lease obligation, less current portion	$	225

We had a total of $2.4 million in capital lease obligations outstanding at December 31, 2014. The weighted average interest rate on all of the Company’s capital leases is 9.66%. The Company’s capital leases are for certain equipment used in the manufacturing process. Interest expense on discontinued operations was $0.1 million in 2014, $0.3 million in 2013 and $0.4 million in 2012, which was related to a capital lease at our former Bossier, Louisiana facility.

Operating Leases

The Company has entered into various equipment and property leases with terms of ten years or less. Total rental expense from continuing operations for 2014, 2013, and 2012 was $3.2 million, $2.8 million, and $2.9 million, respectively. Certain of the Company’s operating lease agreements include renewals and/or purchase options set to expire at various dates. Future minimum payments as of December 31, 2014 for operating leases with initial or remaining terms in excess of one year are (in thousands):

2015	$	2,557
2016		2,451
2017		2,191
2018		1,067
2019		651
Thereafter		2,491
	$	11,408

8. FAIR VALUE MEASUREMENTS:

Assets/Liabilities Measured and Recorded at Fair Value on a Recurring Basis

The Company records its financial assets and liabilities at fair value, which is defined as the price that would be received to sell an asset or paid to transfer a liability, in the principal or most advantageous market for the asset or liability, in an orderly transaction between market participants at the measurement date. The guidance for fair value measurements also applies to nonrecurring fair value measurements of nonfinancial assets and nonfinancial liabilities.

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The authoritative guidance establishes a fair value hierarchy which prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. These levels are: Level 1 (inputs are quoted prices in active markets for identical assets or liabilities); Level 2 (inputs are other than quoted prices that are observable, either directly or indirectly through corroboration with observable market data); and Level 3 (inputs are unobservable, with little or no market data that exists, such as internal financial forecasts). The Company is required to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.

The following table summarizes information regarding the Company’s financial assets and financial liabilities that are measured at fair value on a recurring basis (in thousands):

Description	Balance at December 31, 2014			Level 1		Level 2			Level 3
Financial Assets
Deferred compensation plan	$	6,237		$	4,953	$	1,284		$	—
Derivatives		32			—		32			—
Total Assets	$	6,269		$	4,953	$	1,316		$	—
Financial Liabilities
Contingent consideration	$	(2,679	)	$	—	$	—		$	(2,679	)
Derivatives		(5	)		—		(5	)		—
Total Liabilities	$	(2,684	)	$	—	$	(5	)	$	(2,679	)
Description	Balance at December 31, 2013			Level 1		Level 2			Level 3
Financial Assets
Deferred compensation plan	$	6,000		$	4,944	$	1,056		$	—
Derivatives		1			—		1			—
Total Assets	$	6,001		$	4,944	$	1,057		$	—
Financial Liabilities
Contingent consideration	$	(4,425	)	$	—	$	—		$	(4,425	)
Derivatives		(1	)		—		(1	)		—
Total Liabilities	$	(4,426	)	$	—	$	(1	)	$	(4,425	)

The deferred compensation plan assets consists of cash and several publicly traded stock and bond mutual funds, valued using quoted market prices in active markets classified as Level 1 within the fair value hierarchy, as well as securities that are not actively traded on major exchanges, valued using the NAV of the underlying investments classified as Level 2 within the fair value hierarchy. The Company’s derivatives consist of foreign currency forward contracts, which are accounted for as cash flow hedges, and are valued using various pricing models or discounted cash flow analyses that incorporate observable market parameters, such as interest rate yield curves and currency rates, classified as Level 2 within the valuation hierarchy. Derivative valuations incorporate credit risk adjustments that are necessary to reflect the probability of default by the counterparty or the Company.

The contingent consideration liability represents the probability weighted contingent payment as a percentage of high, mid, and low revenue projections for the following three fiscal years following the acquisition of Permalok on December 30, 2013. Our fair value estimate of this liability was $2.7 million at December 31, 2014 and $4.4 million at December 31, 2013. The inputs used to measure contingent consideration are classified as Level 3 within the valuation hierarchy. The valuation is not supported by market criteria and

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reflects the Company’s internal revenue forecasts. Changes in the fair value of the contingent consideration payment will be reflected in cost of sales during the period which the change in the estimated fair value is calculated.

The net carrying amounts of cash and cash equivalents, trade and other receivables, accounts payable, accrued liabilities and borrowings on line of credit approximate fair value due to the short-term nature of these instruments.

Prior to final payoff in June 2014, the Company was obligated to repay the carrying value of the Company’s long-term debt. The fair value of the Company’s debt was calculated using a coupon rate on borrowings with similar maturities, current remaining average life to maturity, borrower credit quality, and current market conditions all of which are classified as Level 2 inputs within the valuation hierarchy. At December 31, 2013, the fair value of the Company’s long-term debt, including the current portion, was $6.3 million and the carrying value was $6.4 million.

Assets Measured and Recorded at Fair Value on a Non-Recurring Basis

The Company measures its financial assets, including loans receivable and non-marketable equity method investments, at fair value on a non-recurring basis when they are determined to be other-than-temporarily impaired. The fair value of these assets is determined using Level 3 unobservable inputs due to the absence of observable market inputs, and because the valuations require management judgment. There were no material impairment charges recorded on investments in 2014. During 2013 and 2012, there were $0.3 million and $0, respectively, of impairment charges recorded on investments. The impairment charges recorded on investments were included in other expense (income) in the consolidated statement of operations.

If required as part of its annual goodwill impairment assessment, the Company calculates the business enterprise value of applicable reporting units. This calculation uses a weighted average of income and market approaches, and is classified as Level 3 in the valuation hierarchy. The income approach is primarily driven by inputs from the Company’s internal financial forecasts. The market approach incorporates inputs from market participant data, as well as inputs derived from Company assumptions. For 2014, this analysis resulted in the impairment of Tubular Products goodwill of $16.1 million. There were no impairments in 2013 or 2012.

As part of its analysis of impairment of long lived asset groups as of December 31, 2013, the Company determined the fair value of two of its asset groups using third party appraisals. The inputs used in the third party appraisals are classified as Level 3 in the valuation hierarchy, due to limited observed market data and because the valuations require significant judgments. The analysis resulted in a long-lived asset group impairment of $27.5 million, which is included in loss from discontinued operations for 2013.

9. DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES:

The Company conducts business in various foreign countries and, from time to time, settles transactions in foreign currencies. The Company has established a program that utilizes foreign currency forward contracts to offset the risk associated with the effects of certain foreign currency exposures, typically arising from sales contracts denominated in Canadian dollars. Instruments that do not qualify for cash flow hedge accounting treatment are re-measured at fair value on each balance sheet date and resulting gains and losses are recognized in net income. There were no derivative contracts not designated as hedges as of December 31, 2014. As of December 31, 2013, the total notional amount of the derivative contracts not designated as hedges was $25,000 (CAD$27,000). As of December 31, 2014 and 2013, the total notional amount of the derivative contracts designated as hedges was $1.3 million (CAD$1.5 million) and $3.8 million (CAD$4.1 million), respectively. Derivative assets are included within prepaid expenses and other and derivative liabilities are included within accrued liabilities within the consolidated balance sheets. All of the Company’s foreign currency forward contracts are subject to an enforceable master netting arrangement. The Company presents its foreign currency forward contract assets and liabilities within the consolidated balance sheet at their gross fair values.

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For each derivative contract entered into in which the Company seeks to obtain cash flow hedge accounting treatment, the Company formally documents all relationships between hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking the hedge transaction, the nature of the risk being hedged, how the hedging instrument’s effectiveness in offsetting the hedged risk will be assessed prospectively and retrospectively, and a description of the method of measuring ineffectiveness. This process includes linking all derivatives to specific firm commitments or forecasted transactions and designating the derivatives as cash flow hedges. The Company also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivative contracts that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items. The effective portion of these hedged items is reflected in other comprehensive income on the consolidated statement of stockholders’ equity. If it is determined that a derivative contract is not highly effective, or that it has ceased to be a highly effective hedge, the Company will be required to discontinue hedge accounting with respect to that derivative contract prospectively.

All of the Company’s Canadian dollar forward contracts have maturities less than 12 months as of December 31, 2014.

For the years ended December 31, 2014, 2013 and 2012, gains (losses) of $0.1 million, ($0.1) million and ($0.4) million, respectively, from derivative contracts not designated as hedging instruments were recognized in net sales from continuing operations. At December 31, 2014, there is $43,000 of unrealized pretax gain on outstanding derivatives included in accumulated other comprehensive loss, substantially all of which is expected to be reclassified to net sales from continuing operations within the next 12 months as a result of underlying hedged transactions also being recorded in net sales from continuing operations. See Note 15, “Accumulated Other Comprehensive Loss” for additional quantitative information regarding derivative gains and losses.

10. RETIREMENT PLANS:

Defined Contribution Plan

The Company has a defined contribution retirement plan that covers substantially all of its employees and provides for a Company match of up to 50% of the first 6% of employee contributions to the plan, subject to certain limitations. The defined contribution retirement plan offers 25 investment options.

Defined Benefit Plans

The Company has two noncontributory defined benefit plans. Effective 2001, both plans were frozen, and participants were fully vested in their accrued benefits as of the date each plan was frozen. No additional participants can be added to the plans and no additional service can be earned by participants subsequent to the date the plans were frozen. The funding policy for both of these plans is based on current plan costs plus amortization of the unfunded plan liability. All current employees covered by these plans are now covered by the defined contribution retirement plan.

As of December 31, 2014, the Company had recorded, in accordance with the actuarial valuation, an accrued pension liability of $2.1 million and an unrecognized actuarial loss, net of tax, of $1.9 million in accumulated other comprehensive loss. As of December 31, 2013 the Company had recorded, in accordance with the actuarial valuation, an accrued pension liability of $1.2 million and an unrecognized actuarial loss, net of tax, of $1.3 million in accumulated other comprehensive loss. Additionally, as of December 31, 2014 and 2013, the projected and accumulated benefit obligation was $6.9 million and $5.8 million, respectively, and the fair value of plan assets was $4.8 million and $4.6 million, respectively. The increase in pension liability at December 31, 2014 is due to the adoption of the RP-2014 mortality tables by both plans.

The net periodic benefit cost was $0.2 million for the year ended December 31, 2014, $0.4 million for the year ended December 31, 2013, and $0.4 million for the year ended December 31, 2012. The weighted average

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discount rates used to measure the projected benefit obligation were 3.54% and 4.40% as of December 31, 2014 and 2013, respectively.

The plan assets are invested in growth mutual funds, consisting of a mix of debt and equity securities, which are categorized as Level 2 under the fair value hierarchy. The expected weighted average long-term rate of return on plan assets was 7.5% as of December 31, 2014 and 2013.

Non-qualified Retirement Savings Plan

The Company has a deferred compensation plan that covers officers and selected highly compensated employees. The deferred compensation plan generally matches up to 50% of the first $10,000 of officer contributions to the plan and the first $5,000 of other selected highly compensated employee contributions, subject to certain limitations. It also provides officers with a Company funded component with a retirement target benefit. The retirement target benefit amount is an actuarially estimated amount necessary to provide 35% of final base pay after a 35-year career with the Company or 1% of final base pay per year of service. The actual benefit, however, assumes an investment growth at 8% per year. Should the investment growth be greater than 8%, the benefit will be more, but if it is less than 8%, the amount will be less and the Company does not make up any deficiency.

Total expense for all retirement plans in 2014, 2013 and 2012 was $1.8 million, $1.8 million and $1.7 million, respectively.

11. SHARE-BASED COMPENSATION PLANS:

The Company has one active stock incentive plan for employees and directors, the 2007 Stock Incentive Plan, which provides for awards of stock options to purchase shares of common stock, stock appreciation rights, restricted and unrestricted shares of common stock, restricted stock units (“RSUs”) and performance share awards (“PSAs”). In addition, the Company has one inactive stock option plan, the 1995 Stock Options Plan for Nonemployee Directors, under which previously granted options remain outstanding. The plans provide that options become exercisable according to vesting schedules, which range from immediate to ratably over a 60-month period. Options terminate 10 years from the date of grant. The plans also provide for other equity instruments, such as RSUs and PSAs, which grant the right to receive a specified number of shares over a specified period of time. RSUs are service-based awards and vest according to vesting schedules, which range from immediate to ratably over a three-year period. PSAs are service-based awards with a market-based vesting condition. Vesting of the market-based PSAs is dependent upon the performance of the market price of the Company’s stock relative to a comparator group of companies and ranges from two to three years. The following summarizes share-based compensation expense recorded:

	Year ended December 31,
	2014		2013		2012
	(in thousands)
Cost of sales	$	337	$	662	$	432
Selling, general and administrative expenses		2,609		2,398		2,616
Total	$	2,946	$	3,060	$	3,048

As of December 31, 2014, unrecognized compensation expense related to the unvested portion of the Company’s RSUs and PSAs was $4.1 million, which is expected to be recognized over a weighted average period of 1.7 years.

There were 643,393 shares of common stock available for future issuance under the Company’s stock compensation plans at December 31, 2014.

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Stock Options Awards

A summary of status of the Company’s stock options as of December 31, 2014 and changes during the three years then ended is presented below:

	Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life		Aggregate Intrinsic Value
						(in years)		(in thousands)
Balance, December 31, 2011		71,597			21.26
Options granted		—			—
Options exercised		(24,597	)		17.58
Options cancelled		—			—
Balance, December 31, 2012		47,000			23.19
Options granted		—			—
Options exercised		(7,000	)		10.31
Options cancelled		—			—
Balance, December 31, 2013		40,000			25.44
Options granted		—			—
Options exercised		(2,000	)		14.00
Options cancelled		—			—
Balance, December 31, 2014		38,000			26.05
Exercisable and Outstanding, December 31, 2014		38,000			26.05		3.68	$	424

The total intrinsic value, defined as the difference between the current market value and the grant price, of options exercised during the years ended December 31, 2014, 2013 and 2012 was $43,000, $0.1 million and $0.1 million, respectively.

The following table summarizes information about stock options outstanding at December 31, 2014:

Options Outstanding					Options Exercisable
Exercise Price Per Share	Number of Options		Weighted Average Remaining Contractual Life (years)	Weighted Average Exercise Price Per Share	Number of Options		Weighted Average Exercise Price Per Share
$22.07		4,000	0.36	22.07		4,000	22.07
$24.15		24,000	5.25	24.15		24,000	24.15
$28.31		4,000	1.16	28.31		4,000	28.31
$34.77		6,000	1.28	34.77		6,000	34.77
		38,000	3.68	26.05		38,000	26.05

There were no options granted during 2014, 2013 or 2012.

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Restricted Stock Units and Performance Awards

The Company estimates the fair value of Restricted Stock Units (“RSUs”) and Performance Stock Awards (“PSAs”) using the value of the Company’s stock on the date of grant, with the exception of market-based PSAs, for which a Monte Carlo simulation model is used. The assumptions used in the Monte Carlo simulation model for PSAs granted during each year were:

	2014	2013	2012
Expected stock price volatility	23.7% - 65.0%	24.6% - 60.1%	33.3% - 75.7%
Risk free interest rate	0.61%	0.41%	0.24%
Expected dividend yield	0%	0%	0%

A summary of status of the Company’s RSUs and PSAs as of December 31, 2014 and changes during the three years then ended is presented below:

	Number of RSUs and PSAs (1)			Weighted Average Grant Date Fair Value
Unvested RSUs and PSAs at December 31, 2011		193,981		$	24.41
RSUs and PSAs granted		115,306			29.06
Unvested RSUs and PSAs cancelled		(39,306	)		28.44
RSUs and PSAs vested		(26,840	)		23.13
Unvested RSUs and PSAs at December 31, 2012		243,141			26.11
RSUs and PSAs granted		117,966			34.24
Unvested RSUs and PSAs cancelled		(16,002	)		27.45
RSUs and PSAs vested		(88,018	)		23.37
Unvested RSUs and PSAs at December 31, 2013		257,087			30.69
RSUs and PSAs granted		87,353			41.76
Unvested RSUs and PSAs cancelled		(32,756	)		32.36
RSUs and PSAs vested (2)		(80,469	)		25.81
Unvested RSUs and PSAs at December 31, 2014		231,215		$	36.34

(1) The number of shares disclosed in this table are at the target level of 100%.

(2) 13,161 additional shares were vested for performance share awards that were granted in 2011 for the three-year performance period ended December 31, 2013, based on achievement of an actual payout percentage of 143%.

The unvested balance of RSUs and PSAs at December 31, 2014 includes approximately 185,000 PSAs included at a target level. The vesting of these awards is subject to the achievement of specified market-based conditions, and the actual number of common shares that will ultimately be issued will be determined by multiplying this number of PSAs by a payout percentage ranging from 0% to 200%.

The total fair value of RSUs and PSAs vested during the years ended December 31, 2014, 2013, and 2012 was $3.5 million, $2.1 million, and $0.6 million, respectively.

Stock Awards

For the years ended December 31, 2014, 2013 and 2012, stock awards were granted to non-employee directors, which vested immediately upon issuance, as follows: 9,150 shares; 4,912 shares; and 4,807 shares, respectively. The Company recorded compensation expense based on the fair market value per share of the awards on the grant dates of $36.00 and $36.41 in 2014, $27.49 in 2013, and $23.40 in 2012.

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12. SHAREHOLDER RIGHTS PLAN:

In June 1999, the Board of Directors adopted a Shareholder Rights Plan (the “Plan”) designed to ensure fair and equal treatment for all shareholders in the event of a proposed acquisition of the Company by enhancing the ability of the Board of Directors to negotiate more effectively with a prospective acquirer, and reserved 150,000 shares of Series A Junior Participating Preferred Stock (“Preferred Stock”) for purposes of the Plan. In connection with the adoption of the Plan, the Board of Directors declared a dividend distribution of one non-detachable preferred stock purchase right (a “Right”) per share of common stock, payable to shareholders of record on July 9, 2000. Each Right represents the right to purchase one one-hundredth of a share of Preferred Stock at a price of $83.00, subject to adjustment. The Rights will be exercisable only if a person or group acquires, or commences a tender offer to acquire, 15% or more of the Company’s outstanding shares of common stock. Subject to the terms of the Plan and upon the occurrence of certain events, each Right would entitle the holder to purchase common stock of the Company, or of an acquiring company in certain circumstances, having a market value equal to two times the exercise price of the Right. The Company may redeem the Rights at a price of $0.01 per Right under certain circumstances.

On June 18, 2009, the Company and Computershare (“Rights Agent”) entered into an Amended and Restated Rights Agreement (the “Amended and Restated Rights Agreement”). The Amended and Restated Rights Agreement amended and restated the Rights Agreement dated as of June 28, 1999 between the Company and ChaseMellon Shareholder Services, L.L.C. (predecessor to the Rights Agent). The Amended and Restated Rights Agreement extended the final expiration date of the Rights from June 28, 2009 to June 28, 2019. The Amended and Restated Rights Agreement also reflected certain changes in the rights and obligations of the Rights Agent and certain changes in procedural requirements under the Amended and Restated Rights Agreement.

13. COMMITMENTS AND CONTINGENCIES:

Portland Harbor Superfund

On December 1, 2000, a section of the lower Willamette River known as the Portland Harbor Site was included on the National Priorities List at the request of the United States Environmental Protection Agency (the “EPA”). While the Company’s Portland, Oregon manufacturing facility does not border the Willamette River, an outfall from the facility’s stormwater system drains into a neighboring property’s privately owned stormwater system and slip. Since the listing of the site, the Company was notified by the EPA and the Oregon Department of Environmental Quality (“ODEQ”) of potential liability under the Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”). In 2008, the Company was asked to file information disclosure reports with the EPA (CERCLA 104 (e) information request). By agreement with the EPA, ODEQ is responsible for overseeing remedial investigation and source control activities for all upland sites to investigate sources and prevent future contamination to the river. A remedial investigation and feasibility study (“RI/FS”) of the Portland Harbor Site has been directed by a group of 14 potentially responsible parties known as the Lower Willamette Group (the “LWG”) under agreement with the EPA. The Company made a payment of $0.2 million to the LWG in June 2007 as part of an interim settlement, and is under no obligation to make any further payment. The final draft remedial investigation (“RI”) was submitted to the EPA by the LWG in fall of 2011 and the draft feasibility study (“FS”) was submitted by the LWG to the EPA in March 2012. The draft FS identifies ten possible remedial alternatives which range in estimated cost from approximately $169 million to $1.76 billion and estimates a range of two to 28 years to implement the remedial work, depending on the selected alternative. The report does not determine who is responsible for the costs of cleanup or how the cleanup costs will be allocated among the potentially responsible parties. As of the date of this filing, the final RI and the revised FS are pending approval of the EPA.

In 2001, groundwater containing elevated volatile organic compounds (“VOCs”) was identified in one localized area of leased property adjacent to the Portland facility furthest from the river. Assessment work in 2002 and 2003 to further characterize the groundwater was consistent with the initial conclusion that the source

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of the VOCs is located off of Company-owned property. In February 2005, the Company entered into a Voluntary Agreement for Remedial Investigation and Source Control Measures (the “Agreement”) with ODEQ. The Company is one of many Upland Source Control Sites working with ODEQ on Source Control and is considered a “medium” priority site by ODEQ indicating more investigation was recommended. The Company performed RI work required under the Agreement and submitted a draft RI/Source Control Evaluation Report (“SCE”) in December 2005 and a revised draft RI/SCE Report in January 2014 (2014 RI/SCE Report). The conclusions of the report include: (1) the VOCs found in the groundwater do not present an unacceptable risk to human or ecological receptors in the Willamette River; (2) there is no evidence at this time showing a connection between detected VOCs in groundwater and Willamette River sediments; (3) the interim remedial measure to conduct a limited excavation of soil and complete paving the site was completed; (4) a state-of-the art stormwater treatment system was installed; and (5) an area of stained soil was characterized and remediated.

During the localized soil excavation in 2011, additional stained soil was discovered. At the request of ODEQ, the Company developed an additional Work Plan to characterize the nature and extent of soil and/or groundwater impacts from the staining. The Company began implementing this Work Plan in the second quarter of 2012 and submitted sampling results to ODEQ in the third quarter of 2012. Comments from ODEQ were received in November 2012. In February 2013, ODEQ clarified its comments from November 2012, and the Company completed its second round of groundwater sampling for the Stained Soil Investigation Area in May and November 2013. The results were reported to ODEQ in January 2014 in the RI/SCE Report. Comments were received from ODEQ in June 2014 and will be addressed in a revised report.

The Company spent $0.1 million for further Source Control work in 2014, and less than $0.1 million in 2013.

Concurrent with the activities of the EPA and ODEQ, the Portland Harbor Natural Resources Trustee Council (“Trustees”) sent some or all of the same parties, including the Company, a notice of intent to perform a Natural Resource Damage Assessment (“NRDA”) for the Portland Harbor Site to determine the nature and extent of natural resource damages under CERCLA section 107. The Trustees for the Portland Harbor Site consist of representatives from several Northwest Indian Tribes, three federal agencies and one state agency. The Trustees act independently of the EPA and ODEQ. The Trustees have encouraged potentially responsible parties to voluntarily participate in the funding of their injury assessments and several of those parties have agreed to do so. In June 2014, the Company agreed to participate in the injury assessment process, which included funding $0.4 million of the assessment; of this amount, $0.2 million was paid in July 2014 and the remainder was paid in January 2015. The Company has not assumed any additional payment obligations or liabilities with the participation with the NRDA.

The Company’s potential liability is a portion of the costs of the remedy the EPA will select for the entire Portland Harbor Superfund Site. The cost of that remedy is expected to be allocated among more than 100 potentially responsible parties. Because of the large number of responsible parties and the variability in the range of remediation alternatives, the Company is unable to estimate an amount or an amount within a range of costs for its obligation with respect to the Portland Harbor Site matters, and no further adjustment to the consolidated financial statements has been recorded as of the date of this filing. The Company has insurance policies for defense costs, as well as indemnification policies it believes will provide reimbursement for any share of the remediation assessed. However, the Company can provide no assurance that those policies will cover all of the costs which the Company may incur.

In December 2014, a federal district court approved settlements between the Company and two of its insurance carriers. The Company released its interests in the related insurance policies, and received $2.6 million in January 2015 for reimbursement of past indemnification and defense costs incurred by the Company associated with the Portland Harbor Site, substantially all of which reduced cost of sales in 2014. As of December 31, 2014, $2.6 million was included in trade and other receivables. Notwithstanding these settlements, the Company continues to have insurance coverage for indemnification and defense costs related to Portland Harbor Site as described above.

F-28

Houston Environmental Cleanup

In connection with the Company’s sale of its OCTG business, a Limited Phase II Environmental Site Assessment was conducted at the Houston, Texas plant and completed in March 2014, which revealed the presence of VOCs in the groundwater and certain metals in the soil. In June 2014, the Company was admitted into the Texas Commission on Environmental Quality (“TCEQ”) Voluntary Cleanup Program to address these issues and obtain a Certificate of Completion from TCEQ. The cost of any potential cleanup will not be covered by insurance. However, any costs incurred will be reimbursed by the purchaser of the OCTG business see Note 1, “Summary of Significant Accounting Policies – Business Acquisitions and Disposals” if the purchaser of the OCTG business exercises its option to purchase the property under certain circumstances after the Certificate of Completion is obtained. As the Company is in the early stages of this process, no adjustment to the consolidated financial statements has been recorded as of the date of this filing. We expect to be able to estimate the potential costs by mid-2015.

All Sites

The Company operates its facilities under numerous governmental permits and licenses relating to air emissions, storm water run-off, and other environmental matters. The Company’s operations are also governed by many other laws and regulations, including those relating to workplace safety and worker health, principally the Occupational Safety and Health Act and regulations there under which, among other requirements, establish noise and dust standards. The Company believes it is in material compliance with its permits and licenses and these laws and regulations, and the Company does not believe that future compliance with such laws and regulations will have a material adverse effect on its financial position, results of operations or cash flows.

From time to time, the Company is involved in litigation relating to claims arising out of its operations in the normal course of its business. The Company maintains insurance coverage against potential claims in amounts that are believed to be adequate. To the extent that insurance does not cover legal, defense, and indemnification costs associated with a loss contingency, such costs will be expensed as incurred. The Company believes that it is not presently a party to any other litigation, the outcome of which would have a material adverse effect on its business, financial condition, results of operations or cash flows.

Guarantees

The Company has entered into certain stand-by letters of credit that total $2.3 million at December 31, 2014. The stand-by letters of credit relate to workers’ compensation insurance.

14. INCOME TAXES:

The components of income tax expense for continuing operations are as follows:

	Year Ended December 31,
	2014			2013			2012
	(in thousands)
Current:
Federal	$	4,336		$	9,097		$	8,409
State		334			690			278
Total current tax expense		4,670			9,787			8,687
Deferred:
Federal		305			2,631			(416	)
State		(324	)		(60	)		117
Total deferred tax expense (benefit)		(19	)		2,571			(299	)
	$	4,651		$	12,358		$	8,388

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The difference between the Company’s effective income tax rates and the statutory United States federal income tax rate of 35% is explained as follows:

	Year Ended December 31,
	2014			2013			2012
	(in thousands)
Provision (benefit) at statutory rate of 35%	$	(532	)	$	11,921		$	9,083
State provision, net of federal benefit		(96	)		370			601
Federal and state tax credits		(91	)		(525	)		(379	)
Domestic manufacturing deduction		—			(641	)		(762	)
Change in valuation allowance		9			954			—
Uncertain tax positions		5			(7	)		(67	)
Goodwill impairment (nondeductible)		5,623			—			—
Nondeductible expenses		207			345			247
Nontaxable adjustment to contingent consideration		(611	)		—			—
Other		137			(59	)		(335	)
	$	4,651		$	12,358		$	8,388
Effective tax rate		305.6	%		36.3	%		32.4	%

The tax effect of temporary differences that give rise to significant portions of deferred tax assets and liabilities is presented below:

	December 31,
	2014			2013
	(in thousands)
Current deferred tax assets:
Costs and estimated earnings in excess of billings on uncompleted contracts, net	$	2,186		$	2,384
Accrued employee benefits		841			951
Inventories		1,937			2,671
Trade receivable, net		372			319
Net operating loss carryforwards		93			500
Other		1,299			520
		6,728			7,345
Valuation allowance		(719	)		(500	)
		6,009			6,845
Current deferred tax liabilities:
Prepaid expenses		(522	)		(637	)
Current deferred tax assets, net		5,487			6,208
Noncurrent deferred tax assets:
Net operating loss carryforwards		489			211
Tax credit carryforwards		996			478
Accrued employee benefits		4,483			3,740
Other assets		6,067			5,520
Other		142			138
		12,177			10,087
Valuation allowance		(1,139	)		(1,394	)
		11,038			8,693
Noncurrent deferred tax liabilities:
Property and equipment		(23,903	)		(19,343	)
Intangible assets		(1,150	)		(1,192	)
Noncurrent deferred tax liabilities, net		(14,015	)		(11,842	)
Net deferred tax liabilities	$	(8,528	)	$	(5,634	)

F-30

As of December 31, 2014, the Company had approximately $20 million of state net operating loss carryforwards which expire on various dates between 2018 and 2031. The Company also had state tax carryforwards of $1.5 million, which begin to expire in 2015.

The Company considers the earnings of the Mexican subsidiary to be indefinitely reinvested outside the United States on the basis of estimates that future domestic cash generation will be sufficient to meet future domestic cash needs. Should the Company decide to repatriate the foreign earnings, the income tax provision would be adjusted in the period it is determined that the earnings will no longer be indefinitely reinvested outside the United States, and a deferred tax liability of approximately $0.9 million related to the United States federal and state income taxes and foreign withholding taxes on approximately $2.5 million of undistributed foreign earnings would be recorded.

The Company files income tax returns in the United States Federal jurisdiction, in a limited number of foreign jurisdictions, and in many state jurisdictions. Internal Revenue Service examinations have been completed for years prior to 2011. With few exceptions, the Company is no longer subject to United States Federal or state income tax examinations for years before 2010.

A summary of the changes in the unrecognized tax benefits during the years ended December 31, 2014, 2013 and 2012 is presented below (in thousands):

	2014			2013			2012
Unrecognized tax benefits, beginning of year	$	6,207		$	5,245		$	309
Decreases for settlements		(3,265	)		—			—
Decreases for lapse in statute of limitations		(115	)		—			—
Decreases for positions taken in current year		(615	)		—			—
Increases for positions taken in prior years		101			646			3,571
Decreases for positions taken in prior years		—			(696	)		(184	)
Increases for positions taken in the current year		—			1,012			1,549
Unrecognized tax benefits, end of year	$	2,313		$	6,207		$	5,245

The Company does not believe it is reasonably possible that the total amounts of unrecognized tax benefits will change in the following twelve months; however, actual results could differ from those currently expected. Of the balance of unrecognized tax benefits, $2.4 million, which includes interest, would affect the Company’s effective tax rate if recognized at some point in the future.

The Company recognizes interest and penalties related to uncertain tax positions in Income tax expense. As of December 31, 2014 and 2013, the Company has approximately $0.1 million and $0.3 million, respectively, of accrued interest related to uncertain tax positions. Total interest for uncertain tax positions decreased by approximately $0.1 million in 2014, and increased by approximately $0.1 million in 2013 and 2012.

15. ACCUMULATED OTHER COMPREHENSIVE LOSS

Accumulated other comprehensive loss consists of the following (in thousands):

	December 31,
	2014			2013
Pension liability adjustment, net of tax benefit of $1,108 and $704	$	(1,862	)	$	(1,275	)
Deferred gain (loss) on cash flow derivatives, net of tax expense of $14 and benefit of $9		29			14
Total	$	(1,833	)	$	(1,261	)

F-31

The following table summarizes changes in the components of accumulated other comprehensive loss during the twelve months ended December 31, 2014 and December 31, 2013 (in thousands). All amounts are net of tax:

	Defined Benefit Pension Items			Gains (Losses) on Cash Flow Hedges			Total
Balance, December 31, 2012	$	(2,188	)	$	(85	)	$	(2,273	)
Other comprehensive income before reclassifications		674			171			845
Amounts reclassified from accumulated other comprehensive income (loss)		239			(72	)		167
Net current period adjustments to other comprehensive income		913			99			1,012
Balance, December 31, 2013	$	(1,275	)	$	14		$	(1,261	)
Other comprehensive income (loss) before reclassifications		(701	)		17			(684	)
Amounts reclassified from accumulated other comprehensive income (loss)		114			(2	)		112
Net current period adjustments to other comprehensive income (loss)		(587	)		15			(572	)
Balance, December 31, 2014	$	(1,862	)	$	29		$	(1,833	)

The following table provides additional detail about accumulated other comprehensive income (loss) components which were reclassified to the consolidated statement of operations during the twelve months ended December 31, 2014, 2013 and 2012 (in thousands):

Details about Accumulated Other Comprehensive Income (Loss) Components	Amount reclassified from Accumulated Other Comprehensive Income (Loss)									Affected line item in the Consolidated Statements of Operations
	2014			2013			2012
Defined Benefit Pension Items
Net periodic pension cost	$	(182	)	$	(372	)	$	(417	)	Cost of sales
Associated tax benefit		68			133			104		Income tax expense
	$	(114	)	$	(239	)	$	(313	)	Net of tax
Deferred gain on cash flow derivatives
Gain on cash flow derivatives	$	6		$	114		$	(40	)	Net sales
Hedge ineffectiveness		(3	)		—			—		Net sales
Associated tax expense		(1	)		(42	)		19		Income tax expense
	$	2		$	72		$	(21	)	Net of tax
Total reclassifications for the period	$	(112	)	$	(167	)	$	(334	)

16. SEGMENT INFORMATION:

The operating segments reported below are based on the nature of the products sold by the Company and are the segments of the Company for which separate financial information is available and for which operating results are regularly evaluated by the Company’s chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance. Management evaluates segment performance based on operating income.

F-32

The Company’s Water Transmission segment manufactures and markets large diameter, high-pressure steel pipe used primarily for water transmission. The Company’s Water Transmission products are manufactured at its eight manufacturing facilities located in Portland, Oregon; Denver, Colorado; Adelanto, California; Parkersburg, West Virginia; Saginaw, Texas; St. Louis, Missouri; Salt Lake City, Utah and Monterrey, Mexico. During the second half of 2012, the Company permanently closed its facility located in Pleasant Grove, Utah, and transferred its property and equipment to other manufacturing locations. Products are sold primarily to public water agencies either directly or through an installation contractor.

The Company’s Tubular Products segment manufactures and markets smaller diameter, ERW steel pipe for use in a wide range of applications, including energy, construction, agricultural, and industrial systems. The Tubular Products manufacturing facility is located in Atchison, Kansas. Tubular Products are marketed through a network of direct sales force personnel and sales agents throughout the United States, Canada and Mexico. On March 30, 2014 the Company completed the sale of substantially all of the assets and liabilities associated with the OCTG business conducted by the Company’s Tubular Products segment at its former manufacturing facilities in Bossier City, Louisiana and Houston, Texas, excluding the real property located in Houston, Texas.

Based on the location of the customer, the Company sold principally all products in the United States, Canada and Mexico. One customer accounted for 16% and another customer accounted for 10% of total net sales from continuing operations in 2014. One customer accounted for 15% of total net sales from continuing operations in 2013 and one customer accounted for 16% of total net sales from continuing operations in 2012. As of December 31, 2014, all material long-lived assets are located in the United States.

	Year Ended December 31,
	2014			2013			2012
	(in thousands)
Net sales from continuing operations:
Water transmission	$	238,545		$	226,427		$	269,203
Tubular products		164,753			133,018			119,699
Total	$	403,298		$	359,445		$	388,902
Gross profit from continuing operations:
Water transmission	$	39,601		$	46,953		$	45,051
Tubular products		975			13,283			14,057
Total	$	40,576		$	60,236		$	59,108
Operating income (loss) from continuing operations:
Water transmission	$	31,490		$	40,343		$	36,278
Tubular products		(16,677	)		11,943			12,061
		14,813			52,286			48,339
Corporate		(14,619	)		(14,751	)		(17,053	)
Total	$	194		$	37,535		$	31,286
Net sales from continuing operations by geographic region:
United States	$	383,344		$	308,345		$	332,859
Other		19,954			51,100			56,043
Total	$	403,298		$	359,445		$	388,902

F-33

The following includes discontinued operations within Tubular products:

Depreciation and amortization expense:
Water transmission	$	8,716	$	7,082	$	10,474
Tubular products		5,090		5,963		5,541
		13,806		13,045		16,015
Corporate		340		254		252
Total	$	14,146	$	13,299	$	16,267
Capital expenditures:
Water transmission	$	6,190	$	13,204	$	6,830
Tubular products		7,526		14,354		9,813
		13,716		27,558		16,643
Corporate		573		889		146
Total	$	14,289	$	28,447	$	16,789

	December 31,
	2014		2013
	(in thousands)
Goodwill:
Water transmission	$	5,282	$	5,282
Tubular products		—		20,478
Total	$	5,282	$	25,760
Total assets:
Water transmission	$	222,365	$	218,849
Tubular products		102,449		184,088
		324,814		402,937
Corporate		27,068		30,522
Total	$	351,882	$	433,459

All property and equipment is located in the United States as of December 31, 2014 and 2013, except for a total of $4.2 million, which is located in Mexico.

17. RELATED PARTY TRANSACTION

During 2014, the Company paid $1.2 million to Raymond James & Associates, an affiliate of Eagle Asset Management, for investment banking services related to the Company’s sale of its former OCTG business. Eagle Asset Management is a substantial stockholder of the Company, as it owns more than 10 percent of the Company’s common stock.

F-34

18. QUARTERLY DATA (UNAUDITED):

Summarized quarterly financial data for 2014 and 2013 is as follows (dollars in thousands, except per share).

	First Quarter			Second Quarter			Third Quarter			Fourth Quarter			Total
For the year ended December 31, 2014
Net sales:
Water transmission	$	42,999		$	62,205		$	76,857		$	56,484		$	238,545
Tubular products		39,648			39,783			39,648			45,674			164,753
Total	$	82,647		$	101,988		$	116,505		$	102,158		$	403,298
Gross profit (loss):
Water transmission	$	1,668		$	11,491		$	16,559		$	9,883		$	39,601
Tubular products		2,646			(174	)		(739	)		(758	)		975
Total	$	4,314		$	11,317		$	15,820		$	9,125		$	40,576
Operating income (loss):
Water transmission	$	(299	)	$	9,543		$	14,429		$	7,817		$	31,490
Tubular products		2,294			(589	)		(1,155	)		(17,227	)		(16,677	)
Corporate		(3,121	)		(3,555	)		(3,943	)		(4,000	)		(14,619	)
Total	$	(1,126	)	$	5,399		$	9,331		$	(13,410	)	$	194
Net income (loss)	$	(12,104	)	$	3,192		$	5,021		$	(13,996	)	$	(17,887	)
Basic Earnings (loss) per share:
Continuing Operations	$	(0.13	)	$	0.34		$	0.62		$	(1.47	)	$	(0.65	)
Discontinued Operations		(1.14	)		—			(0.09	)		—			(1.23	)
Total	$	(1.27	)	$	0.34		$	0.53		$	(1.47	)	$	(1.88	)
Diluted Earnings (loss) per share:
Continuing Operations	$	(0.13	)	$	0.33		$	0.61		$	(1.47	)	$	(0.65	)
Discontinued Operations		(1.14	)		—			(0.09	)		—			(1.23	)
Total	$	(1.27	)	$	0.33		$	0.52		$	(1.47	)	$	(1.88	)

F-35

	First Quarter			Second Quarter			Third Quarter			Fourth Quarter			Total
For the year ended December 31, 2013
Net sales:
Water transmission	$	78,613		$	58,148		$	46,835		$	42,831		$	226,427
Tubular products		28,722			29,794			31,692			42,810			133,018
Total	$	107,335		$	87,942		$	78,527		$	85,641		$	359,445
Gross profit:
Water transmission	$	19,870		$	12,125		$	7,932		$	7,026		$	46,953
Tubular products		3,049			3,085			3,322			3,827			13,283
Total	$	22,919		$	15,210		$	11,254		$	10,853		$	60,236
Operating income (loss):
Water transmission	$	18,033		$	10,499		$	6,306		$	5,505		$	40,343
Tubular products		2,735			2,774			2,951			3,483			11,943
Corporate		(3,879	)		(4,004	)		(3,559	)		(3,309	)		(14,751	)
Total	$	16,889		$	9,269		$	5,698		$	5,679		$	37,535
Net income	$	9,506		$	5,561		$	1,016		$	(17,006	)	$	(923	)
Basic Earnings (loss) per share:
Continuing Operations	$	1.16		$	0.59		$	0.29		$	0.26		$	2.29
Discontinued Operations		(0.15	)		—			(0.18	)		(2.06	)	$	(2.39	)
Total	$	1.01		$	0.59		$	0.11		$	(1.80	)	$	(0.10	)
Diluted Earnings (loss) per share:
Continuing Operations	$	1.16		$	0.59		$	0.29		$	0.25		$	2.27
Discontinued Operations		(0.16	)		—			(0.18	)		(2.03	)		(2.37	)
Total	$	1.00		$	0.59		$	0.11		$	(1.78	)	$	(0.10	)

F-36

Schedule II

NORTHWEST PIPE COMPANY

VALUATION AND QUALIFYING ACCOUNTS

(Dollars in thousands)

	Balance at Beginning of Period		Charged to Profit and Loss		Deduction from Reserves			Balance at End of Period
Year ended December 31, 2014:
Allowance for doubtful accounts	$	685	$	411	$	(341	)	$	755
Valuation allowance for deferred tax assets		1,894		26		(62	)		1,858
Year ended December 31, 2013:
Allowance for doubtful accounts	$	1,748	$	124	$	(1,187	)	$	685
Valuation allowance for deferred tax assets		940		954		—			1,894
Year ended December 31, 2012:
Allowance for doubtful accounts	$	1,650	$	1,381	$	(1,283	)	$	1,748
Valuation allowance for deferred tax assets		926		14		—			940

S-1

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, on the 16^th day of March 2015.

NORTHWEST PIPE COMPANY
By	/S/    SCOTT MONTROSS
	Scott Montross
	Director, President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant in the capacities indicated, on the 16^th day of March 2015.

Signature	Title
/S/    RICHARD A. ROMAN Richard A. Roman	Director and Chairman of the Board
/S/    SCOTT MONTROSS Scott Montross	Director, President and Chief Executive Officer
/S/    ROBIN GANTT Robin Gantt	Senior Vice President and Chief Financial Officer (Principal Financial Officer)
/S/    MICHELLE APPLEBAUM Michelle Applebaum	Director
/S/    JAMES E. DECLUSIN James E. Declusin	Director
/S/    HARRY L. DEMOREST Harry L. Demorest	Director
/S/    KEITH R. LARSON Keith R. Larson	Director

EX-10.32

Exhibit 10.32

NORTHWEST PIPE COMPANY

2015

SHORT TERM INCENTIVE PLAN

I.    PURPOSE

The purpose of the Northwest Pipe Company 2015 Short Term Incentive Plan (“Plan”) is to enhance the ability of the Company to attract, motivate, reward and retain its senior level employees while aligning employees’ interests with those of the Company’s shareholders by providing additional cash compensation to Eligible Employees of the Company based on the achievement of objective performance targets.

II.    DEFINITIONS

a) “Award” means an annual incentive bonus earned by an Eligible Employee under the Plan for a Year.

b) “Base Salary” for a Year means the Eligible Employee’s annual base salary actually received as an Eligible Employee for the Year. Base salary does not include Awards under the Plan, long-term incentive awards, imputed income from such programs as life insurance, or nonrecurring expenses such as moving expenses. It is also based on salary before reductions for such items as contributions under Section 401(k) of the Internal Revenue Code of 1986, as amended.

c) “Board” means the Board of Directors of the Company.

d) “Committee” means the Compensation Committee of the Board.

e) “Company” means Northwest Pipe Company, an Oregon Corporation, its successors and assigns.

f) “Eligible Employees” means Executive Officers and any other senior level employee as approved by the CEO.

g) “Executive Officers” means executive officers of the Company as appointed by the Board, Vice Presidents of Purchasing and Human Resources, any Group Vice Presidents of Sales and any Group Vice Presidents of Operations.

h) “Group” means Water Transmission Group or Tubular Products Group.

i) “Income Before Income Taxes” means income before income taxes for the Company as reflected in the Company’s audited consolidated financial statements before extraordinary or unusual items (e.g. charges for divestiture and restructuring activities and gains on sales) and the cumulative effect of any change in accounting principles.

j) “Maximum” for any Year, means the level of achievement, as established by the Committee, of the Performance Criteria level necessary to earn 200% of the target payout for the Plan.

k) “Operating Income” means operating income for the Company and Group as reflected in the Company’s audited consolidated financial statements before extraordinary or unusual items (e.g. charges for divestiture and restructuring activities and gains on sales) and the cumulative effect of any change in accounting principles. The Company’s operating income is reported on the Consolidated Statements of Operations and the Group’s operating income is disclosed in the footnotes to the consolidated financial statements.

l) “Performance Criteria” means:

i. Income Before Taxes,

ii. Operating Income, or

iii. A combination of the foregoing or such other performance measures as the Committee may approve from time to time.

1

iv. Performance Criteria may be in respect to the performance of the consolidated Company, a Group, or any combination of the foregoing. It may be absolute or relative and may be expressed in terms of a progression with a specified range.

m) “Performance Goals” means the Threshold, Target and Maximum levels specifically.

n) “Plan” means this Short Term Incentive Plan.

o) “Target” for any Year, means the level of achievement, as established by the Committee, of the Performance Criteria necessary to earn the target payout for the Plan.

p) “Target Award Percentage” for an Eligible Employee with respect to any Year means the percentage of the Eligible Employee’s Base Salary as established by the Committee the salaried employee would earn as an Award for that Year upon attainment of the Performance Targets applicable to such Eligible Employee.

q) “Threshold” for any Year, means the minimum acceptable performance necessary to start earning an Award, as established by the Committee of the Performance Criteria necessary to earn any Award under the Plan.

r) “Year” means the fiscal year of the Company or any other period designated by the Committee with respect to which an Award is earned.

III.    PLAN ADMINISTRATION

The Committee administers the Plan. The Committee has full authority to establish the rules and regulations relating to the Plan and to interpret the Plan and those rules and regulations. The Committee has the authority to approve the Performance Criteria, Performance Goals and Target Award Percentages applicable to each Eligible Employee. The Committee has the authority to decide and interpret the facts in any case arising under the Plan and to make all other determinations and to take all other actions necessary or appropriate for the proper administration of the Plan, including the delegation of such authority or power, where appropriate. However, the Committee is not authorized to increase the amount of the Award that would otherwise be payable pursuant to the terms of the Plan without the approval of the Board.

IV.    CHANGES TO THE PERFORMANCE GOALS

The Committee may change the Performance Goal(s) to reflect a change in corporate capitalization or a corporate transaction, such as a merger, consolidation, separation, reorganization or partial or complete liquidation. The Committee may also change the Performance Goal(s) to reflect the occurrence of unexpected events, such as an acquisition or disposition, significant asset impairment, product liability judgment or such others as the Committee may determine.

V.    EMPLOYEE ELIGIBILITY

The Plan includes all Executive Officers. The CEO, at his discretion, may add other senior level employees to the Plan. An Eligible Employee must have been employed at least 90 days on the last day of the Year to participate in that Year’s Plan. Eligible Employees must continue as an employee of the Company through the day the bonus is awarded.

VI.    DETERMINATION AND PAYMENT OF AWARDS

a) The CEO shall prepare, for Committee review and approval, schedules with respect to each Year, which after approval will be treated as part of the Plan for that Year, setting forth:

i. The Company and Group Performance Goals, and

ii. The Target Award Percentages for each Eligible Employee.

2

b) The CEO or his designate shall notify each Eligible Employee of his or her Target Award Percentage and Performance Goals for the Year.

c) The amount of an Eligible Employee’s Award will vary depending on performance. There is no Award for below Threshold performance, performance at Target earns a 100% Target Award Percentage, and performance at Maximum earns a 200% Target Award Percentage. For performance between Threshold, Target and Maximum, Awards are calculated by interpolating on a straight line basis between the established goals.

d) Up to 30% of an Eligible Employee’s award is dependent on the achievement of individual goals.

e) Notwithstanding anything contained in this Plan to the contrary, the Committee in its sole discretion may reduce any Award to any Eligible Employee to any amount, including zero.

f) As soon as practicable after the completion of the Company’s financial statements for the Year, the CEO shall review and approve each Award earned by Eligible Employees that are not Executive Officers and the Committee shall review and approve any Award earned by any Executive Officer. Each Award shall be paid in a single lump sum cash payment as soon as practicable after the completion of the review and approval process, generally no later than 3 months after the close of the Year in which the Award was earned.

g) If the Company’s financial statements are the subject of a restatement due to misconduct, to the extent permitted by governing law, in all appropriate cases, the Company will seek reimbursement of excess incentive cash compensation paid under the Plan to Executive Officers for the relevant Plan Years. For purposes of this Plan, excess incentive cash compensation means the positive difference, if any, between (i) the Award paid to the Executive Officer and (ii) the Award that would have been made to the Executive Officer, not including the effect of any discretionary reductions made by the Committee, had the Target Award Percentage been calculated based on the Company’s financial statements as restated.

VII.    AMENDMENTS

The Committee may at any time amend (in whole or in part) the Plan.

VIII.    TERMINATION

The Committee may terminate this Plan (in whole or in part) at any time.

IX.    MISCELLANEOUS PROVISIONS

a) This Plan is not a contract between the Company and the Eligible Employees. Neither the establishment of this Plan, nor any other action taken hereunder, shall be construed as giving any individual any right to participate in the Plan, receive an Award or be retained in the employ of the Company. The Company is under no obligation to continue the Plan.

b) The Plan is not funded. The Plan is not required to establish any special or separate fund, or to make any other segregation of assets, to assure payment of Awards.

c) The Company has the right to deduct from Awards paid any taxes or other amounts required by law to be withheld.

d) Nothing contained in the Plan shall limit or affect in any manner or degree the normal and usual powers of management exercised by the executives, officers, the Board or committees thereof. Management will continue to have the power to change the duties or the character of employment of any employee (including any executive) of the Company or to remove the individual from the employment of the Company at any time, all of which rights and powers are specifically reserved.

e) An Eligible Employee in a Plan Year is not automatically an Eligible Employee in future Plan Years.

f) The Plan and all rights hereunder shall be construed in accordance with and governed by the laws of the State of Oregon.

3

g) If all or any part of this Plan is declared, by any court, governmental authority or arbitrator, to be unlawful or invalid, such unlawfulness or invalidity will not serve to invalidate any portion of this Plan not declared to be unlawful or invalid. Any section or part of a section so construed in a manner which will give effect to the terms of such section or part of a section to the fullest extent possible while remaining lawful and valid.

h) Neither the Committee’s nor the Board’s determinations under this Plan need to be uniform and may be made by the Committee or the Board selectively among persons who receive, or are eligible to receive, Awards (whether or not such persons are similarly situated).

X.    EFFECTIVE DATE

This Plan was approved by the Committee on February 26, 2015 and is effective as of January 1, 2015.

4

EX-21

EXHIBIT 21

NORTHWEST PIPE COMPANY

SUBSIDIARIES OF THE REGISTRANT

Northwest Pipe Mexico S.A. de C.V., Mexico

Thompson Tank Holdings, Inc., Oregon

Permalok Corporation, Missouri

EX-23.1

EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-190854, 333-20165, 333-152573) of Northwest Pipe Company of our report dated March 16, 2015 relating to the financial statements, financial statement schedule and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

Portland, Oregon

March 16, 2015

EX-31.1

EXHIBIT 31.1

CERTIFICATION

I, Scott Montross, certify that:

1. I have reviewed this annual report on Form 10-K of Northwest Pipe Company;

2. Based on my knowledge, this annual report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this annual report;

3. Based on my knowledge, the financial statements, and other financial information included in this annual report, fairly present in all material respects, the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this annual report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and we have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this annual report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal controls which could adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal controls over financial reporting.

Date: March 16, 2015

By:	/S/    SCOTT MONTROSS
	Scott Montross
	Director, President and Chief Executive Officer

EX-31.2

EXHIBIT 31.2

CERTIFICATION

I, Robin Gantt, certify that:

1. I have reviewed this annual report on Form 10-K of Northwest Pipe Company;

2. Based on my knowledge, this annual report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this annual report;

3. Based on my knowledge, the financial statements, and other financial information included in this annual report, fairly present in all material respects, the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this annual report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and we have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this annual report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent function):

a. all significant deficiencies and material weaknesses in the design or operation of internal controls which could adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal controls over financial reporting.

Date: March 16, 2015

By:	/S/    ROBIN GANTT
	Robin Gantt Senior Vice President, Chief Financial Officer (Principal Financial Officer)

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Northwest Pipe Company (the “Company”) on Form 10-K for the period ending December 31, 2014 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Scott Montross, Director, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/S/    SCOTT MONTROSS

Scott Montross

Director, President and Chief Executive Officer

March 16, 2015

EX-32.2

EXHIBIT 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Northwest Pipe Company (the “Company”) on Form 10-K for the period ending December 31, 2014 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Robin Gantt, Vice President, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

/S/    ROBIN GANTT

Robin Gantt

Senior Vice President, Chief Financial Officer

March 16, 2015

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Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Dec. 31, 2014

Equity [Abstract]

Summary of Accumulated Other Comprehensive Loss

Accumulated other comprehensive loss consists of the following (in thousands):

	December 31,
	2014			2013
Pension liability adjustment, net of tax benefit of $1,108 and $704	$	(1,862	)	$	(1,275	)
Deferred gain (loss) on cash flow derivatives, net of tax expense of $14 and benefit of $9		29			14
Total	$	(1,833	)	$	(1,261	)

Schedule of Components of Accumulated Other Comprehensive Loss

The following table summarizes changes in the components of accumulated other comprehensive loss during the twelve months ended December 31, 2014 and December 31, 2013 (in thousands). All amounts are net of tax:

	Defined Benefit Pension Items			Gains (Losses) on Cash Flow Hedges			Total
Balance, December 31, 2012	$	(2,188	)	$	(85	)	$	(2,273	)
Other comprehensive income before reclassifications		674			171			845
Amounts reclassified from accumulated other comprehensive income (loss)		239			(72	)		167
Net current period adjustments to other comprehensive income		913			99			1,012
Balance, December 31, 2013	$	(1,275	)	$	14		$	(1,261	)
Other comprehensive income (loss) before reclassifications		(701	)		17			(684	)
Amounts reclassified from accumulated other comprehensive income (loss)		114			(2	)		112
Net current period adjustments to other comprehensive income (loss)		(587	)		15			(572	)
Balance, December 31, 2014	$	(1,862	)	$	29		$	(1,833	)

Schedule of Reclassifications of Accumulated Other Comprehensive Income (Loss)

The following table provides additional detail about accumulated other comprehensive income (loss) components which were reclassified to the consolidated statement of operations during the twelve months ended December 31, 2014, 2013 and 2012 (in thousands):

Details about Accumulated Other Comprehensive Income (Loss) Components	Amount reclassified from Accumulated Other Comprehensive Income (Loss)									Affected line item in the Consolidated Statements of Operations
	2014			2013			2012
Defined Benefit Pension Items
Net periodic pension cost	$	(182	)	$	(372	)	$	(417	)	Cost of sales
Associated tax benefit		68			133			104		Income tax expense
	$	(114	)	$	(239	)	$	(313	)	Net of tax
Deferred gain on cash flow derivatives
Gain on cash flow derivatives	$	6		$	114		$	(40	)	Net sales
Hedge ineffectiveness		(3	)		—			—		Net sales
Associated tax expense		(1	)		(42	)		19		Income tax expense
	$	2		$	72		$	(21	)	Net of tax
Total reclassifications for the period	$	(112	)	$	(167	)	$	(334	)

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Line of Credit and Long Term Debt - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Borrowings outstanding under credit agreement	$ 45,600,000	$ 87,900,000
Credit agreement maximum borrow capacity	165,000,000
Additional net borrowing capacity under credit agreement	61,700,000
Weighted average borrowing rate	2.43%	2.69%
Credit agreement expiration date	Oct. 24, 2017
Remaining principal on term notes		6,400,000
Interest expense for continuing operations from line of credit borrowing, term notes and capital leases	2,300,000	3,600,000	5,200,000
Capitalized interest on line of credit borrowing, term notes and capital leases	200,000	400,000	200,000
Term Notes [Member]
Debt Instrument [Line Items]
Remaining principal on term notes		$ 6,400,000
Minimum [Member] | Term Notes [Member]
Debt Instrument [Line Items]
Credit agreement interest rate		9.07%
Maximum [Member] | Term Notes [Member]
Debt Instrument [Line Items]
Credit agreement interest rate		10.50%
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Credit agreement interest rate	2.00%	2.00%
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Debt Instrument [Line Items]
Credit agreement interest rate	1.75%
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Debt Instrument [Line Items]
Credit agreement interest rate	2.75%
Prime Rate [Member] | Minimum [Member]
Debt Instrument [Line Items]
Credit agreement interest rate	0.75%
Prime Rate [Member] | Maximum [Member]
Debt Instrument [Line Items]
Credit agreement interest rate	1.75%

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Property and Equipment - Summary of Property and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 216,819	$ 231,895
Less accumulated depreciation and amortization	(84,224)	(88,834)
Property and equipment, net	132,595	143,061
Land and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	23,689	24,240
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	42,368	42,763
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	140,578	136,581
Equipment Under Capital Lease [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	6,001	14,196
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,183	$ 14,115

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Shareholder Rights Plan - Additional Information (Detail) (USD $)	0 Months Ended
	Jun. 18, 2009	Dec. 31, 2014 Right
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of series A junior participating preferred stock shares reserved		150,000
Number of non-detachable preferred stock purchase right distributed as dividend to shareholders		1
Right to purchase a share of Preferred Stock per each right		0.01
Price at which shareholders holding a right may purchase 1/100th of a share of preferred stock		$ 83.00
Acquisition percentage to cause rights to become exercisable		15.00%
Market value, multiple over exercise price		2
Value at which Company may redeem rights		$ 0.01
Rights agreement expiration date	Jun. 28, 2019

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Leases - Schedule of Future Minimum Lease Payments for Capital Leases (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Leases [Abstract]
2015	$ 2,283
2016	169
2017	68
2018	0
2019	0
Thereafter	0
Total minimum lease payments	2,520
Amount representing interest	125
Present value of minimum lease payments with average interest rates of 9.66%	2,395
Current portion of capital lease obligation	2,170	2,216
Capital lease obligation, less current portion	$ 225	$ 5,679

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Accumulated Other Comprehensive Loss - Summary of Accumulated Other Comprehensive Loss (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Pension liability adjustment, tax effect	$ 1,108	$ 704
Net deferred gain (loss) on cash flow derivatives, tax effect	$ 14	$ 9

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Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts and Billings in Excess of Costs and Estimated Earnings - Schedule of Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts and Billings in Excess of Costs and Estimated Earnings (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Contractors [Abstract]
Costs incurred on uncompleted contracts	$ 265,552	$ 182,709
Estimated earnings	53,744	37,438
Sum of costs incurred and estimated earnings on uncompleted contracts	319,296	220,147
Less billings to date	(276,284)	(173,047)
Amounts are presented in the Consolidated Balance Sheets as follows:
Costs and estimated earnings in excess of billings on uncompleted contracts	45,847	50,468
Billings in excess of costs and estimated earnings on uncompleted contracts	(2,835)	(3,368)
Total, net	$ 43,012	$ 47,100

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Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Summary of Property and Equipment

Property and equipment consists of the following (in thousands):

	December 31,
	2014			2013
Land and improvements	$	23,689		$	24,240
Buildings		42,368			42,763
Machinery and equipment		140,578			136,581
Equipment under capital lease		6,001			14,196
Construction in progress		4,183			14,115
		216,819			231,895
Less accumulated depreciation and amortization		(84,224	)		(88,834	)
Property and equipment, net	$	132,595		$	143,061

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Accumulated Other Comprehensive Loss - Schedule of Components of Accumulated Other Comprehensive Loss (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Beginning Balance	$ (1,261)	$ (2,273)
Other comprehensive income (loss) before reclassifications	(684)	845
Amounts reclassified from accumulated other comprehensive income (loss)	112	167
Other comprehensive income (loss)	(572)	1,012	39
Accumulated other comprehensive income (loss), Ending Balance	(1,833)	(1,261)	(2,273)
Defined Benefit Pension Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Beginning Balance	(1,275)	(2,188)
Other comprehensive income (loss) before reclassifications	(701)	674
Amounts reclassified from accumulated other comprehensive income (loss)	114	239
Other comprehensive income (loss)	(587)	913
Accumulated other comprehensive income (loss), Ending Balance	(1,862)	(1,275)
Gains (Losses) on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Beginning Balance	14	(85)
Other comprehensive income (loss) before reclassifications	17	171
Amounts reclassified from accumulated other comprehensive income (loss)	(2)	(72)
Other comprehensive income (loss)	15	99
Accumulated other comprehensive income (loss), Ending Balance	$ 29	$ 14

XML

Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Federal statutory rate	35.00%
State net operating loss carryforwards	$ 20
Net operating loss carryforwards expiration date, lower limit	2018
State tax carryforwards	1.5
Net operating loss carryforwards expiration date, upper limit	2031
Tax carryforwards, expiration year	2015
Deferred tax liability	0.9
Undistributed foreign earnings	2.5
Expected change in unrecognized tax benefits	2.4
Accrued interest related to uncertain tax positions	0.1	0.3
Increased (decreased) in interest for uncertain tax positions	$ (0.1)	$ 0.1	$ 0.1

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Leases - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Leases [Abstract]
Capital lease obligations outstanding	$ 2,400,000
Weighted average interest rate on capital leases	9.66%
Interest expense on discontinued operations related to capital lease	99,000	344,000	411,000
Rental expense from continuing operations	$ 3,200,000	$ 2,800,000	$ 2,900,000
Maximum duration of operating leases (in years)	10 years

XML

Income Taxes - Schedule of Unrecognized Tax Benefits (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Unrecognized tax benefits, beginning of year	$ 6,207	$ 5,245	$ 309
Decreases for settlements	(3,265)
Decreases for lapse in statute of limitations	(115)
Decreases for positions taken in current year	(615)
Increases for positions taken in prior years	101	646	3,571
Decreases for positions taken in prior years		(696)	(184)
Increases for positions taken in the current year		1,012	1,549
Unrecognized tax benefits, end of year	$ 2,313	$ 6,207	$ 5,245

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Schedule II - Valuation and Qualifying Accounts (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 685	$ 1,748	$ 1,650
Charged to Profit and Loss	411	124	1,381
Deduction from Reserves	(341)	(1,187)	(1,283)
Balance at End of Period	755	685	1,748
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	1,894	940	926
Charged to Profit and Loss	26	954	14
Deduction from Reserves	(62)
Balance at End of Period	$ 1,858	$ 1,894	$ 940

XML

Segment Information - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Manufacturing locations, Water Transmission	8
Property and equipment, net, located in Mexico	132,595	143,061
MEXICO [Member]
Segment Reporting Information [Line Items]
Property and equipment, net, located in Mexico	4,200	4,200
Customer One [Member] | Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Segment Reporting Information [Line Items]
Percent of total net sales for customer	16.00%	15.00%	16.00%
Customer Two [Member] | Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Segment Reporting Information [Line Items]
Percent of total net sales for customer	10.00%

XML

Accumulated Other Comprehensive Loss - Summary of Accumulated Other Comprehensive Loss (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Pension liability adjustment, net of tax benefit of $1,108 and $704	$ (1,862)	$ (1,275)
Deferred gain (loss) on cash flow derivatives, net of tax expense of $14 and benefit of $9	29	14
Total	$ (1,833)	$ (1,261)	$ (2,273)

XML

Commitments and Contingencies - Additional Information (Detail) (USD $)	1 Months Ended			12 Months Ended
	Jun. 30, 2007	Jan. 31, 2015	Jul. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Jun. 30, 2014
Other Commitments [Line Items]
Company made payment to Lower Willamette Group as interim settlement	$ 200,000
Amount spent for Source Control work				100,000
Amount spent for further Source Control work				100,000
Number of potentially responsible parties				100
Trades and other receivables				58,310,000	72,470,000
Total stand-by letters of credit				2,300,000
Subsequent Event [Member]
Other Commitments [Line Items]
Company made payment to Lower Willamette Group as interim settlement		2,600,000
Settled Litigation [Member]
Other Commitments [Line Items]
Trades and other receivables				2,600,000
Portland Harbor Natural Resources Trustee Council [Member]
Other Commitments [Line Items]
Injury assessment process, payment			200,000
Injury assessment process, outstanding						400,000
Minimum [Member]
Other Commitments [Line Items]
Estimated cost				169,000,000
Estimated years to implement				2 years
Maximum [Member]
Other Commitments [Line Items]
Estimated cost				$ 1,760,000,000
Estimated years to implement				28 years

XML

Segment Information

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Segment Information

16. SEGMENT INFORMATION:

The operating segments reported below are based on the nature of the products sold by the Company and are the segments of the Company for which separate financial information is available and for which operating results are regularly evaluated by the Company’s chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance. Management evaluates segment performance based on operating income.

The Company’s Water Transmission segment manufactures and markets large diameter, high-pressure steel pipe used primarily for water transmission. The Company’s Water Transmission products are manufactured at its eight manufacturing facilities located in Portland, Oregon; Denver, Colorado; Adelanto, California; Parkersburg, West Virginia; Saginaw, Texas; St. Louis, Missouri; Salt Lake City, Utah and Monterrey, Mexico. During the second half of 2012, the Company permanently closed its facility located in Pleasant Grove, Utah, and transferred its property and equipment to other manufacturing locations. Products are sold primarily to public water agencies either directly or through an installation contractor.

The Company’s Tubular Products segment manufactures and markets smaller diameter, ERW steel pipe for use in a wide range of applications, including energy, construction, agricultural, and industrial systems. The Tubular Products manufacturing facility is located in Atchison, Kansas. Tubular Products are marketed through a network of direct sales force personnel and sales agents throughout the United States, Canada and Mexico. On March 30, 2014 the Company completed the sale of substantially all of the assets and liabilities associated with the OCTG business conducted by the Company’s Tubular Products segment at its former manufacturing facilities in Bossier City, Louisiana and Houston, Texas, excluding the real property located in Houston, Texas.

Based on the location of the customer, the Company sold principally all products in the United States, Canada and Mexico. One customer accounted for 16% and another customer accounted for 10% of total net sales from continuing operations in 2014. One customer accounted for 15% of total net sales from continuing operations in 2013 and one customer accounted for 16% of total net sales from continuing operations in 2012. As of December 31, 2014, all material long-lived assets are located in the United States.

	Year Ended December 31,
	2014			2013			2012
	(in thousands)
Net sales from continuing operations:
Water transmission	$	238,545		$	226,427		$	269,203
Tubular products		164,753			133,018			119,699
Total	$	403,298		$	359,445		$	388,902
Gross profit from continuing operations:
Water transmission	$	39,601		$	46,953		$	45,051
Tubular products		975			13,283			14,057
Total	$	40,576		$	60,236		$	59,108
Operating income (loss) from continuing operations:
Water transmission	$	31,490		$	40,343		$	36,278
Tubular products		(16,677	)		11,943			12,061
		14,813			52,286			48,339
Corporate		(14,619	)		(14,751	)		(17,053	)
Total	$	194		$	37,535		$	31,286
Net sales from continuing operations by geographic region:
United States	$	383,344		$	308,345		$	332,859
Other		19,954			51,100			56,043
Total	$	403,298		$	359,445		$	388,902

The following includes discontinued operations within Tubular products:

Depreciation and amortization expense:
Water transmission	$	8,716	$	7,082	$	10,474
Tubular products		5,090		5,963		5,541
		13,806		13,045		16,015
Corporate		340		254		252
Total	$	14,146	$	13,299	$	16,267
Capital expenditures:
Water transmission	$	6,190	$	13,204	$	6,830
Tubular products		7,526		14,354		9,813
		13,716		27,558		16,643
Corporate		573		889		146
Total	$	14,289	$	28,447	$	16,789

	December 31,
	2014		2013
	(in thousands)
Goodwill:
Water transmission	$	5,282	$	5,282
Tubular products		—		20,478
Total	$	5,282	$	25,760
Total assets:
Water transmission	$	222,365	$	218,849
Tubular products		102,449		184,088
		324,814		402,937
Corporate		27,068		30,522
Total	$	351,882	$	433,459

All property and equipment is located in the United States as of December 31, 2014 and 2013, except for a total of $4.2 million, which is located in Mexico.

XML

Goodwill and Intangible Assets - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 30, 2014
Goodwill [Line Items]
Goodwill	$ 5,282	$ 25,760	$ 20,478
Goodwill written off related to sale of business	4,412
Amortization expense	540	27	27
Tubular Products [Member]
Goodwill [Line Items]
Goodwill	16,100
Water Transmission [Member]
Goodwill [Line Items]
Goodwill	5,300
Disposal of OCTG Business [Member]
Goodwill [Line Items]
Goodwill written off related to sale of business	$ 4,400			$ 4,400

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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended		0 Months Ended		1 Months Ended
	Dec. 31, 2014 Customer Segment Pension_Plan	Dec. 31, 2013 Customer	Dec. 30, 2013	Mar. 30, 2014	Sep. 30, 2014	Dec. 31, 2015
Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments	2
Carrying value of investment	$ 0	$ 0
Loss on sale of discontinued operations	(13,497,000)
Goodwill written off related to sale of business	4,412,000
Proceeds from sale of business	29,791,000
Business acquisition (net of received), amount paid		15,689,000
Business acquisition, goodwill		5,282,000
Book overdraft	900,000	0
Advanced deposits	0	0
Accrued vacation payable	2,200,000	2,200,000
Number of defined benefit pension plans	2
Change in gross profit which triggers senior management review	2.00%
Minimum likelihood of tax benefit being realized in order for tax benefit to be recorded	50.00%
Number of customers with balances in excess of 10% of total accounts receivable	1	2
Permalok Corporation [Member]
Summary Of Significant Accounting Policies [Line Items]
Business acquisition date	Dec. 30, 2013
Business acquisition, percentage			100.00%
Business acquisition (net of received), amount paid			15,700,000
Business acquisition, goodwill			5,300,000
Disposal of OCTG Business [Member]
Summary Of Significant Accounting Policies [Line Items]
Business disposal date	Mar. 30, 2014
Proceeds from sale of business				42,700,000
Loss on sale of discontinued operations				13,500,000	1,800,000
Proceeds held in escrow for indemnification obligations under the purchase agreement				4,300,000
Payment of capital lease obligations at closing date				5,000,000
Goodwill written off related to sale of business	4,400,000			4,400,000
Transaction costs				1,800,000
Proceeds from sale of business	29,800,000
Other Long-term Liabilities [Member] | Permalok Corporation [Member]
Summary Of Significant Accounting Policies [Line Items]
Business acquisition, contingent consideration recorded	2,700,000	4,400,000
Scenario, Forecast [Member] | Permalok Corporation [Member]
Summary Of Significant Accounting Policies [Line Items]
Business acquisition, contingent consideration recorded						$ 0
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of intangible assets	3 years
Minimum [Member] | Land Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment	15 years
Minimum [Member] | Buildings [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment	20 years
Minimum [Member] | Machinery and Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment	3 years
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of intangible assets	15 years
Maximum [Member] | Land Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment	30 years
Maximum [Member] | Buildings [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment	40 years
Maximum [Member] | Machinery and Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment	30 years

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Income Taxes - Schedule of Current and Noncurrent Deferred Tax Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current deferred tax assets:
Costs and estimated earnings in excess of billings on uncompleted contracts, net	$ 2,186	$ 2,384
Accrued employee benefits	841	951
Inventories	1,937	2,671
Trade receivable, net	372	319
Net operating loss carryforwards	93	500
Other	1,299	520
Total	6,728	7,345
Valuation allowance	(719)	(500)
Deferred income taxes	6,009	6,845
Current deferred tax liabilities:
Prepaid expenses	(522)	(637)
Current deferred tax assets, net	5,487	6,208
Noncurrent deferred tax assets:
Net operating loss carryforwards	489	211
Tax credit carryforwards	996	478
Accrued employee benefits	4,483	3,740
Other assets	6,067	5,520
Other	142	138
Total	12,177	10,087
Valuation allowance	(1,139)	(1,394)
Deferred tax assets, net of valuation allowance noncurrent	11,038	8,693
Noncurrent deferred tax liabilities:
Property and equipment	(23,903)	(19,343)
Intangible assets	(1,150)	(1,192)
Noncurrent deferred tax liabilities, net	(14,015)	(11,842)
Net deferred tax liabilities	$ (8,528)	$ (5,634)

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Share-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Share-Based Compensation Expense

The following summarizes share-based compensation expense recorded:

	Year ended December 31,
	2014		2013		2012
	(in thousands)
Cost of sales	$	337	$	662	$	432
Selling, general and administrative expenses		2,609		2,398		2,616
Total	$	2,946	$	3,060	$	3,048

Summary of Status of Company's Stock Options

A summary of status of the Company’s stock options as of December 31, 2014 and changes during the three years then ended is presented below:

	Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life		Aggregate Intrinsic Value
						(in years)		(in thousands)
Balance, December 31, 2011		71,597			21.26
Options granted		—			—
Options exercised		(24,597	)		17.58
Options cancelled		—			—
Balance, December 31, 2012		47,000			23.19
Options granted		—			—
Options exercised		(7,000	)		10.31
Options cancelled		—			—
Balance, December 31, 2013		40,000			25.44
Options granted		—			—
Options exercised		(2,000	)		14.00
Options cancelled		—			—
Balance, December 31, 2014		38,000			26.05
Exercisable and Outstanding, December 31, 2014		38,000			26.05		3.68	$	424

Summary of Information about Stock Options Outstanding

The following table summarizes information about stock options outstanding at December 31, 2014:

Options Outstanding					Options Exercisable
Exercise Price Per Share	Number of Options		Weighted Average Remaining Contractual Life (years)	Weighted Average Exercise Price Per Share	Number of Options		Weighted Average Exercise Price Per Share
$22.07		4,000	0.36	22.07		4,000	22.07
$24.15		24,000	5.25	24.15		24,000	24.15
$28.31		4,000	1.16	28.31		4,000	28.31
$34.77		6,000	1.28	34.77		6,000	34.77
		38,000	3.68	26.05		38,000	26.05

Summary of Estimated Fair Value Assumptions on Date of Grant

The Company estimates the fair value of Restricted Stock Units (“RSUs”) and Performance Stock Awards (“PSAs”) using the value of the Company’s stock on the date of grant, with the exception of market-based PSAs, for which a Monte Carlo simulation model is used. The assumptions used in the Monte Carlo simulation model for PSAs granted during each year were:

	2014	2013	2012
Expected stock price volatility	23.7% - 65.0%	24.6% - 60.1%	33.3% - 75.7%
Risk free interest rate	0.61%	0.41%	0.24%
Expected dividend yield	0%	0%	0%

Summary of Status of Company's RSUs and PSAs

A summary of status of the Company’s RSUs and PSAs as of December 31, 2014 and changes during the three years then ended is presented below:

	Number of RSUs and PSAs (1)			Weighted Average Grant Date Fair Value
Unvested RSUs and PSAs at December 31, 2011		193,981		$	24.41
RSUs and PSAs granted		115,306			29.06
Unvested RSUs and PSAs cancelled		(39,306	)		28.44
RSUs and PSAs vested		(26,840	)		23.13
Unvested RSUs and PSAs at December 31, 2012		243,141			26.11
RSUs and PSAs granted		117,966			34.24
Unvested RSUs and PSAs cancelled		(16,002	)		27.45
RSUs and PSAs vested		(88,018	)		23.37
Unvested RSUs and PSAs at December 31, 2013		257,087			30.69
RSUs and PSAs granted		87,353			41.76
Unvested RSUs and PSAs cancelled		(32,756	)		32.36
RSUs and PSAs vested (2)		(80,469	)		25.81
Unvested RSUs and PSAs at December 31, 2014		231,215		$	36.34

(1) The number of shares disclosed in this table are at the target level of 100%.

(2) 13,161 additional shares were vested for performance share awards that were granted in 2011 for the three-year performance period ended December 31, 2013, based on achievement of an actual payout percentage of 143%.

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Goodwill and Intangible Assets - Summary of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 3,967
Accumulated Amortization	(522)
Total	3,445
Remaining Weighted-Average Amortization Period	8 years 9 months 18 days
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,378
Accumulated Amortization	(138)
Total	1,240
Remaining Weighted-Average Amortization Period	9 years
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,162
Accumulated Amortization	(232)
Total	930
Remaining Weighted-Average Amortization Period	4 years
Trade Names and Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,132
Accumulated Amortization	(75)
Total	1,057
Remaining Weighted-Average Amortization Period	14 years
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	295
Accumulated Amortization	(77)
Total	$ 218
Remaining Weighted-Average Amortization Period	2 years 10 months 24 days

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Share-Based Compensation Plans - Summary of Estimated Fair Value Assumptions on Date of Grant (Detail) (Performance Stock Awards (PSAs) [Member])	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Performance Stock Awards (PSAs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected stock price volatility, minimum	23.70%	24.60%	33.30%
Expected stock price volatility, maximum	65.00%	60.10%	75.70%
Risk free interest rate	0.61%	0.41%	0.24%
Expected dividend yield	0.00%	0.00%	0.00%

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Derivative Financial Instruments and Hedging Activities - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2014 Not Designated As Hedging Instrument [Member] USD ($)	Dec. 31, 2014 Not Designated As Hedging Instrument [Member] CAD	Dec. 31, 2013 Not Designated As Hedging Instrument [Member] USD ($)	Dec. 31, 2013 Not Designated As Hedging Instrument [Member] CAD	Dec. 31, 2014 Designated As Hedging Instrument [Member] USD ($)	Dec. 31, 2014 Designated As Hedging Instrument [Member] CAD	Dec. 31, 2013 Designated As Hedging Instrument [Member] USD ($)	Dec. 31, 2013 Designated As Hedging Instrument [Member] CAD
Derivatives, Fair Value [Line Items]
Notional amount of derivative contracts				$ 0	0	$ 25,000	27,000	$ 1,300,000	1,500,000	$ 3,800,000	4,100,000
Maturity period for Canadian forward contracts	12 months
Gains (losses) from derivative contracts not designated as hedging instruments recognized in net sales from continuing operations	100,000	(100,000)	(400,000)
Unrealized pretax gain on outstanding derivatives included in accumulated other comprehensive loss expected to be reclassified to net sales from continuing operations within next 12 months	$ 43,000

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Inventories - Components of Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Short-term inventories:
Raw materials	$ 48,005	$ 52,598
Work-in-process	1,741	4,902
Finished goods	20,663	49,351
Supplies	2,370	3,541
Total short-term inventories	72,779	110,392
Long-term inventories:
Finished goods	1,214	1,249
Total inventories	$ 73,993	$ 111,641

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Consolidated Statements of Cash Flows (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Cash Flows [Abstract]
Tax refunds	$ 393	$ 311	$ 1,834

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Retirement Plans - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014 OptionPlan Investment_Options	Dec. 31, 2013	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]
Defined contribution retirement plan, Company match on first 6% of employee contributions	50.00%
Defined contribution retirement plan, employee contributions for which Company will match at 50%	6.00%
Defined contribution retirement plan, number of investment options offered	25
Number of noncontributory defined benefit plans	2
Accrued pension liability	$ 2,100,000	$ 1,200,000
Unrecognized actuarial loss, net of tax	1,900,000	1,300,000
Projected and accumulated benefit obligation	6,900,000	5,800,000
Fair value of plan assets	4,800,000	4,600,000
Net periodic benefit cost	200,000	400,000	400,000
Weighted average discount rates used to measure projected benefit obligation	3.54%	4.40%
Expected weighted average long term rate of return on plan assets	7.50%	7.50%
Non-qualified retirement savings plan, Company match percentage on first $10,000 of employee contributions	50.00%
Non-qualified retirement savings plan, Officer contributions for which Company will match at 50%	10,000
Non-qualified retirement savings plan, Select employee contributions for which Company will match at 50%	5,000
Non-qualified retirement savings plan target benefit amount	35% of final base pay after a 35-year career with the Company or 1% of final base pay per year of service.
Non-qualified retirement savings plan actuarial yearly asset growth percentage assumption	8.00%
Total expense for all retirement plans	$ 1,800,000	$ 1,800,000	$ 1,700,000

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Summary of Significant Accounting Policies - Summary of Components of Balance Sheet Accounts Classified as Assets and Liabilities of Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Assets:
Trade and other receivables, net	$ 11,673
Inventories	44,668
Prepaid expenses and other	206
Total current assets	56,547
Property and equipment, net	11,509
Total assets	68,056
Liabilities:
Current portion of capital lease obligations	1,289
Accounts payable	3,013
Accrued liabilities	1,466
Deferred revenue	4,505
Total current liabilities	10,273
Capital lease obligations, less current portion	4,075
Total liabilities	$ 14,348

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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company bases its estimates on historical experience and on various assumptions that are believed to be reasonable under the circumstances at that time. On an on-going basis, the Company evaluates all of its estimates, including those related to revenue recognition, allowance for doubtful accounts, goodwill, long-lived assets, including depreciation and amortization, inventories, income taxes, and litigation and other contingencies. Actual results could differ from those estimates under different assumptions or conditions

Basis of Consolidation and Presentation

Basis of Consolidation and Presentation

The consolidated financial statements include the accounts of Northwest Pipe Company and its subsidiaries over which the Company exercises control as of the financial statement date. Intercompany accounts and transactions have been eliminated.

On March 30, 2014, the Company completed the sale of substantially all of the assets and liabilities associated with its oil country tubular goods (“OCTG”) business, as discussed in more detail below. The Company’s results of operations for its disposed OCTG business have been presented as discontinued operations for all periods presented within the consolidated statements of operations.

Certain amounts from the prior year financial statements have been reclassified in order to conform to the current year presentation.

Lucid Energy Inc., over which the Company exercises significant influence but does not control, is accounted for under the cost method of accounting. Lucid Energy is a clean energy company based in Portland, Oregon. The carrying value of our investment is $0 at both December 31, 2014 and 2013 due to a history of net losses by Lucid Energy.

Business Acquisitions and Disposals

Business Acquisitions and Disposals

The Company allocates the fair value of purchase consideration to the tangible assets acquired, liabilities assumed and intangible assets acquired based on their estimated fair values. The excess of the fair value of purchase consideration over the fair values of these identifiable assets and liabilities is recorded as goodwill. Such valuations require management to make significant estimates and assumptions, especially with respect to intangible assets. Contingent consideration is calculated and recorded at the date of the acquisition. During the measurement period, which does not exceed one year from the acquisition date, the Company may record adjustments to the assets acquired and liabilities assumed as a result of information received regarding the valuation of assets and liabilities after the acquisition date, with the corresponding offset to goodwill. Upon the conclusion of the measurement period, any subsequent adjustments are recorded to earnings.

Disposal of OCTG Business

On March 30, 2014 the Company completed the sale of substantially all of the assets and liabilities associated with its OCTG business, which was conducted by the Company at its manufacturing facilities in Bossier City, Louisiana and Houston, Texas, excluding the real property located in Houston, Texas. These facilities were previously included within the Company’s Tubular Products Group. Total consideration of $42.7 million was paid by the buyer, resulting in a loss on sale of $13.5 million. The calculation of the loss on sale included a write down of $4.4 million of goodwill. Of the proceeds received, $4.3 million was placed in escrow to secure the Company’s indemnification obligations under the purchase agreement, $5.0 million was used to repay capital leases related to and secured by certain assets at the Bossier City, Louisiana manufacturing facility, $1.8 million was used to pay for transaction costs and $1.8 million was used to pay a net working capital adjustment made in September 2014, resulting in net proceeds of $29.8 million.

The table below presents the components of the balance sheet accounts associated with the OCTG business as of December 31, 2013 (in thousands). All sold assets and liabilities were transferred to the buyer as of March 30, 2014.

	December 31, 2013
Assets:
Trade and other receivables, net	$	11,673
Inventories		44,668
Prepaid expenses and other		206
Total current assets		56,547
Property and equipment, net		11,509
Total assets		68,056
Liabilities:
Current portion of capital lease obligations		1,289
Accounts payable		3,013
Accrued liabilities		1,466
Deferred revenue		4,505
Total current liabilities		10,273
Capital lease obligations, less current portion		4,075
Total liabilities	$	14,348

The table below presents the operating results for the Company’s discontinued operations (in thousands). These operating results for 2014, 2013 and 2012 do not necessarily reflect what they would have been had the OCTG business not been classified as a discontinued operation.

	Year Ended December 31,
	2014			2013			2012
Net sales	$	22,225		$	116,111			135,601
Cost of sales		23,881			123,888			138,511
Gross loss		(1,656	)		(7,777	)		(2,910	)
Selling, general, and administrative		396			1,509			816
Impairment of fixed assets		—			27,500			—
Operating loss		(2,052	)		(36,786	)		(3,726	)
Loss on sale of business		(13,497	)		—			—
Interest income		—			47			13
Interest expense		(99	)		(344	)		(411	)
Loss before income taxes		(15,648	)		(37,083	)		(4,124	)
Income tax benefit		(3,934	)		(14,484	)		(2,867	)
Net loss	$	(11,714	)	$	(22,599	)	$	(1,257	)

Acquisition of Permalok Corporation

On December 30, 2013 the Company acquired 100% of the outstanding shares of capital stock of Permalok Corporation, a fabricator of steel piping utilizing the Permalok interlocking pipe joining system. Permalok’s rolled and welded steel pipe products provide an alternate joint solution which complements and expands the Company’s product offerings in the Water Transmission segment. Total consideration (net of cash received) of $15.7 million was paid to the owners of the business, resulting in the recording of $5.3 million of goodwill, none of which is expected to be deductible for tax purposes. The goodwill recorded is attributed to synergies expected from integrating operations of Permalok with the rest of the Company’s Water Transmission business. The goodwill is included within the Water Transmission Group for purposes of segment reporting. Contingent consideration of $2.7 million and $4.4 million was recorded in other long-term liabilities as of December 31, 2014 and December 31, 2013, which represents the probability weighted contingent payment as a percentage of high, mid, and low revenue projections for years 2014, 2015 and 2016. There were no payments on the contingent consideration obligation in 2015 for 2014 revenues.

Pro forma results of operations related to our acquisitions during the year ended December 31, 2013 have not been presented because they are not material to our Consolidated Statements of Operations, either individually or in the aggregate.

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and cash equivalents consist of cash and short term highly liquid investments with remaining maturities of three months or less when purchased. At times, the Company will have outstanding checks in excess of related bank balances (a book overdraft). If this occurs, the amount of the book overdraft will be reclassified to accounts payable, and changes in the book overdraft will be reflected as a component of operating activities in the consolidated statement of cash flows. The Company had a book overdraft of $0.9 million at December 31, 2014. There was not a book overdraft at December 31, 2013.

Receivables and Allowance for Doubtful Accounts

Receivables and Allowance for Doubtful Accounts

Trade receivables are reported on the consolidated balance sheet net of any doubtful accounts. The Company maintains allowances for estimated losses resulting from the inability of its customers to make required payments or from contract disputes. The amounts of such allowances are based on Company history and management’s judgment. At least monthly, the Company reviews past due balances to identify the reasons for non-payment. The Company will write off a receivable account once the account is deemed uncollectible. The Company believes the reported allowances at December 31, 2014 and 2013 are adequate. If the customers’ financial conditions were to deteriorate resulting in their inability to make payments, or if contract disputes were to escalate, additional allowances may need to be recorded which would result in additional expenses being recorded for the period in which such determination was made.

Customer Prepayments

Customer Prepayments

Contractual terms may require prepayment of a portion of a contract value by the customer in advance of completing the work. Advanced deposits are recorded in accrued liabilities and are offset by invoices as work is performed on the contract. There were no advanced deposits at either December 31, 2014, or December 31, 2013.

Inventories

Inventories

Inventories are stated at the lower of cost or market. Raw material inventories of steel are stated at cost, either on a specific identification basis or on an average cost basis. All other raw material inventories, as well as supplies, are stated on an average cost basis. Finished goods are stated at cost using the first-in, first-out method of accounting.

Property and Equipment

Property and Equipment

Property and equipment is stated at cost. Maintenance and repairs are expensed as incurred, and costs of new equipment and buildings, as well as costs of expansions or refurbishment of existing equipment and buildings, including interest where applicable, are capitalized. Depreciation and amortization are determined by the units of production method for most equipment and by the straight-line method for the remaining assets based on the estimated useful lives of the related assets. Estimated useful lives by major classes of property and equipment are as follows: Land improvements (15–30 years); Buildings (20–40 years); Machinery and equipment (3–30 years). Depreciation expense calculated under the units of production method may be less than, equal to, or greater than depreciation expense calculated under the straight-line method due to variances in production levels. Upon disposal, costs and related accumulated depreciation of the assets are removed from the accounts and resulting gains or losses are reflected in operating expenses. The Company leases certain equipment under long-term capital leases, which are being amortized on a straight-line basis over the shorter of its useful life or the lease term.

The Company assesses impairment of property and equipment whenever changes in circumstances indicate that the carrying values of the asset or asset group(s) may not be recoverable. The asset group is the lowest level at which identifiable cash flows are largely independent of the cash flows of other groups of assets or liabilities. The recoverable value of long-lived asset group is determined by estimating future undiscounted cash flows using assumptions about the expected future operating performance of the Company.

In conjunction with the preparation of the financial statements for the year ended December 31, 2013, the Company determined that an impairment triggering event as defined in ASC 360-10 had occurred for the assets located at its Bossier City, Louisiana facility. See Note 4, “Property and Equipment” for further discussion of the property and equipment impairment recorded during 2013.

Goodwill and Intangible Assets

Goodwill and Intangible Assets

Goodwill represents the excess of purchase price over the assigned fair values of the net assets in connection with an acquisition. Goodwill is reviewed for impairment annually at December 31 or whenever events occur or circumstances change that indicates goodwill may be impaired. Goodwill is tested for impairment at the reporting unit level. A reporting unit is an operating segment or one level below an operating segment (also known as a component). Our reporting units are equivalent to our operating segments as the individual components meet the criteria for aggregation.

Intangible assets consist primarily of customer relationships, patents, and trade names and trademarks recorded as the result of acquisition activity. Intangible assets are amortized using the straight-line method over estimated useful lives ranging from 3 to 15 years.

See Note 5, “Goodwill and Intangible Assets” for further discussion of the Company’s goodwill and intangible asset balances.

Workers Compensation Insurance

Workers Compensation Insurance

The Company is self-insured, or maintains high deductible policies, for losses and liabilities associated with workers compensation claims. Losses are accrued based upon the Company’s estimates of the aggregate liability for claims incurred using historical experience and certain actuarial assumptions followed in the insurance indust

Accrued Liabilities

Accrued Liabilities

The Company’s accrued liabilities include payroll related liabilities, reserves for health and workers’ compensation claims, property and sales tax payable, and other liabilities expected to be paid within one year of the balance sheet date. At both December 31, 2014 and 2013, accrued vacation payable of $2.2 million was included in accrued liabilities.

Pension Benefits

Pension Benefits

The Company has two defined benefit pension plans that have been frozen since 2001. The Company funds these plans to cover current plan costs plus amortization of the unfunded plan liabilities. To record these obligations, management uses estimates relating to investment returns, mortality, and discount rates. Management reviews all of these assumptions on an annual basis.

Derivative Instruments

Derivative Instruments

The Company conducts business in foreign countries, and, from time to time, settles transactions in foreign currencies. The Company has established a program that utilizes foreign currency forward contracts to offset the risk associated with the effects of certain foreign currency exposures, typically arising from sales contracts denominated in Canadian currency. Foreign currency forward contracts are consistent with the Company’s strategy for financial risk management. The Company utilizes cash flow hedge accounting treatment for qualifying foreign currency forward contracts. Instruments that do not qualify for cash flow hedge accounting treatment are remeasured at fair value at each balance sheet date and resulting gains and losses are recognized in net income (loss).

Foreign Currency Transactions

Foreign Currency Transactions

Assets and liabilities subject to foreign currency fluctuations are translated into United States dollars at the period-end exchange rate, and revenue and expenses are translated at exchange rates representing an average for the period. Translation adjustments from designated hedges are included in accumulated other comprehensive loss as a separate component of stockholders’ equity. Gains or losses on all other foreign currency transactions are recognized in the consolidated statement of operations. The functional currency of the Company’s Mexican operations is the United States dollar.

Revenue Recognition

Revenue Recognition

Revenue from construction contracts in the Company’s Water Transmission Group is recognized on the percentage-of-completion method. For a majority of contracts, revenue is measured by the costs incurred to date as a percentage of the estimated total costs of each contract (cost-to-cost method). For a small number of contracts, revenue is measured using units of delivery as progress is best estimated by the number of units delivered under the contract. Contract costs include all direct material and labor costs and those indirect costs related to contract performance, such as indirect labor, supplies, tools, repairs and depreciation. Selling, general and administrative costs are charged to expense as incurred. The cost of steel is recognized as a project cost when the steel is introduced into the manufacturing process. Estimated total costs of each contract are reviewed on a monthly basis by project management and operations personnel for all active projects. All cost revisions that result in the gross profit as a percent of sales increasing or decreasing by more than two percent are reviewed by senior management personnel.

The Company begins recognizing revenue on a project when persuasive evidence of an arrangement exists, recoverability is reasonably assured, and project costs are incurred. Costs may be incurred before the Company has persuasive evidence of an arrangement. In those cases, if recoverability from that arrangement is probable, the project costs are deferred and revenue recognition is delayed.

Changes in job performance, job conditions and estimated profitability, including those arising from contract change orders, contract penalty provisions, foreign currency exchange rate movements, changes in raw materials costs, and final contract settlements may result in revisions to estimates of revenue, costs and income and are recognized in the period in which the revisions are determined. Provisions for losses on uncompleted contracts are made in the period such losses are known.

Revenue from the Company’s Tubular Products Group is recognized when all four of the following criteria have been satisfied: persuasive evidence of an arrangement exists, the price is fixed or determinable, delivery has occurred, and collectability is reasonably assured. Deferred revenue is recorded when the manufacturing process is complete and customers are invoiced prior to physical delivery of the product.

Income Taxes

Income Taxes

Income taxes are recorded using an asset and liability approach that requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in the Company’s financial statements or tax returns. Valuation allowances are established when necessary to reduce deferred income tax assets to the amount expected to be realized. The determination of the provision for income taxes requires significant judgment, the use of estimates and the interpretation and application of complex tax laws. The provision for income taxes primarily reflects a combination of income earned and taxed in the various United States federal and state and, to a lesser extent, foreign jurisdictions. Jurisdictional tax law changes, increases or decreases in permanent differences between book and tax items, accruals or adjustments of accruals for unrecognized tax benefits or valuation allowances, and the change in the mix of earnings from these taxing jurisdictions all affect the overall effective tax rate.

The Company records tax reserves for federal, state, local and international exposures relating to periods subject to audit. The development of reserves for these exposures requires judgments about tax issues, potential outcomes and timing, and is a subjective estimate. The Company assesses tax positions and records tax benefits for all years subject to examination based upon management’s evaluation of the facts, circumstances, and information available at the reporting dates. For those tax positions where it is more-likely-than-not that a tax benefit will be sustained, the largest amount of tax benefit with a greater than 50% likelihood of being realized upon settlement with a tax authority that has full knowledge of all relevant information has been recorded. For those tax positions where it is not more-likely-than-not that a tax benefit will be sustained, no tax benefit has been recognized in the financial statements.

Accumulated Other Comprehensive Loss

Accumulated Other Comprehensive Loss

Accumulated other comprehensive loss includes unrealized gains and losses on derivative instruments related to the effective portion of cash flow hedges and changes in the funded status of the defined benefit pension plans, both net of the related income tax effect. For further information, refer to Note 15, “Accumulated Other Comprehensive Loss”.

Earnings (Loss) per Share

Earnings (Loss) per Share

Earnings (loss) per basic and diluted weighted average common shares outstanding was calculated as follows for the years ended December 31 (in thousands, except per share data):

	2014			2013			2012
Income (loss) from continuing operations	$	(6,173	)	$	21,676		$	17,501
Loss from discontinued operations		(11,714	)		(22,599	)		(1,257	)
Net income (loss)	$	(17,887	)	$	(923	)	$	16,244
Basic weighted-average common shares outstanding		9,515			9,445			9,377
Effect of potentially dilutive common shares(1)		—			89			68
Diluted weighted-average common shares outstanding		9,515			9,534			9,445
Earnings (loss) per basic common share:
Continuing operations	$	(0.65	)	$	2.29		$	1.87
Discontinued operations		(1.23	)		(2.39	)		(0.14	)
Total	$	(1.88	)	$	(0.10	)	$	1.73
Earnings (loss) per diluted common share:
Continuing operations	$	(0.65	)	$	2.27		$	1.85
Discontinued operations		(1.23	)		(2.37	)		(0.13	)
Total	$	(1.88	)	$	(0.10	)	$	1.72
Antidilutive shares excluded from net earnings per diluted common share calculation		65			93			92

(1) Represents the effect of the assumed exercise of stock options and the vesting of restricted stock units and performance stock awards, based on the treasury stock method.

Concentrations of Credit Risk

Concentrations of Credit Risk

Financial instruments, which potentially subject the Company to concentrations of credit risk, consist principally of trade receivables, derivative contracts, the escrow account related to the sale of the OCTG business, and deferred compensation plan assets. Trade receivables generally represent a large number of customers, including municipalities, manufacturers, distributors and contractors, dispersed across a wide geographic base. At December 31, 2014, one customer had a balance in excess of 10% of total accounts receivable. At December 31, 2013, two customers had a balance in excess of 10% of total accounts receivable. Derivative contracts are with a financial institution whose short-term investments are rated A-1 by Standard and Poor’s. The Company’s deferred compensation plan assets, also included in other assets, are invested in a diversified portfolio of stock and bond mutual funds.

Share-based Compensation

Share-based Compensation

The Company recognizes the compensation cost of employee and director services received in exchange for awards of equity instruments based on the grant date estimated fair value of the awards. Share-based compensation cost is recognized over the period during which the employee or director is required to provide service in exchange for the award, and as forfeitures occur, the associated compensation cost recognized to date is reversed.

The Company estimates the fair value of Restricted Stock Units (“RSUs”) and Performance Stock Awards (“PSAs”) using the value of the Company’s stock on the date of grant, with the exception of market-based PSAs, for which a Monte Carlo simulation model is used. The Monte Carlo simulation model requires the use of subjective and complex assumptions including the price volatility of the underlying stock. The expected stock price volatility assumption was determined using the historical volatility of the Company’s and a comparator group of companies’ stock over the most recent historical period equivalent to the expected life. The Monte Carlo simulation model calculates many potential outcomes for an award and estimates fair value based on the most likely outcome.

See Note 11, “Share-based Compensation Plans” for further discussion of the Company’s share-based compensation.

Recent Accounting and Reporting Developments

Recent Accounting and Reporting Developments

Accounting Changes

In April 2014, the FASB issued ASU 2014-08, which changes the criteria for when the disposal of a component of an entity may be presented as discontinued operations. The guidance requires that the disposal be considered a strategic shift (such as the disposal of a major geographical area, a major line of business, a major equity method investment, or other major part of an entity) which will have a major effect on a reporting entity’s operating and financial results in order to be presented as discontinued operations. Disposals which qualify for discontinued operations presentation will require expanded disclosures. The Company adopted this guidance on January 1, 2015 for any future disposals qualifying for discontinued operations presentation.

In July 2013, the FASB issued ASU 2013-11, which clarified guidance on the presentation of unrecognized tax benefits. The guidance requires that an unrecognized tax benefit, or portion of an unrecognized tax benefit, be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward when such items exist in the same taxing jurisdiction. The Company adopted this guidance on January 1, 2014 as required, and the effect was not material.

Recent Accounting Standards

In August 2014, the FASB issued Accounting Standards Update (“ASU”) No. 2014-15, “Presentation of Financial Statements—Going Concern.” This standard requires management to evaluate for each annual and interim reporting period whether it is probable that the reporting entity will not be able to meet its obligations as they become due within one year after the date that the financial statements are issued. If the entity is in such a position, the standard provides for certain disclosures depending on whether or not the entity will be able to successfully mitigate its going concern status. This guidance is effective for annual periods ending after December 15, 2016 and interim periods within annual periods beginning after December 15, 2016. Early application is permitted. The Company does not expect a material impact to the Company’s financial condition, results of operations or cash flows from the adoption of this guidance.

In May 2014, the FASB issued Accounting Standards Update (“ASU”) No. 2014-09, “Revenue from Contracts with Customers,” which will replace most existing revenue recognition guidance in accordance with U.S. GAAP. The core principle of the ASU is that an entity should recognize revenue for the transfer of goods or services equal to the amount that it expects to be entitled to receive for those goods or services. The ASU requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments. The ASU will be effective for the Company beginning January 1, 2017, including interim periods in 2017, and allows for both retrospective and prospective methods of adoption. The Company is in the process of determining the method of adoption and assessing the impact of this ASU on its consolidated financial statements.

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Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2014

Valuation and Qualifying Accounts [Abstract]

Schedule II - Valuation and Qualifying Accounts

Schedule II

NORTHWEST PIPE COMPANY

VALUATION AND QUALIFYING ACCOUNTS

(Dollars in thousands)

	Balance at Beginning of Period		Charged to Profit and Loss		Deduction from Reserves			Balance at End of Period
Year ended December 31, 2014:
Allowance for doubtful accounts	$	685	$	411	$	(341	)	$	755
Valuation allowance for deferred tax assets		1,894		26		(62	)		1,858
Year ended December 31, 2013:
Allowance for doubtful accounts	$	1,748	$	124	$	(1,187	)	$	685
Valuation allowance for deferred tax assets		940		954		—			1,894
Year ended December 31, 2012:
Allowance for doubtful accounts	$	1,650	$	1,381	$	(1,283	)	$	1,748
Valuation allowance for deferred tax assets		926		14		—			940

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Leases - Schedule of Future Minimum Lease Payments for Capital Leases (Parenthetical) (Detail)	Dec. 31, 2014
Leases [Abstract]
Weighted average interest rate on capital leases	9.66%

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Summary of Significant Accounting Policies - Summary of Operating Results for Company's Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Discontinued Operations and Disposal Groups [Abstract]
Net sales	$ 22,225	$ 116,111	$ 135,601
Cost of sales	23,881	123,888	138,511
Gross loss	(1,656)	(7,777)	(2,910)
Selling, general, and administrative	396	1,509	816
Impairment of fixed assets		27,500
Operating loss	(2,052)	(36,786)	(3,726)
Loss on sale of business	(13,497)
Interest income		47	13
Interest expense	(99)	(344)	(411)
Loss before income taxes	(15,648)	(37,083)	(4,124)
Income tax benefit	(3,934)	(14,484)	(2,867)
Loss on discontinued operations	$ (11,714)	$ (22,599)	$ (1,257)

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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Summary of Components of Balance Sheet Accounts Classified as Assets and Liabilities of Discontinued Operations

The table below presents the components of the balance sheet accounts associated with the OCTG business as of December 31, 2013 (in thousands). All sold assets and liabilities were transferred to the buyer as of March 30, 2014.

	December 31, 2013
Assets:
Trade and other receivables, net	$	11,673
Inventories		44,668
Prepaid expenses and other		206
Total current assets		56,547
Property and equipment, net		11,509
Total assets		68,056
Liabilities:
Current portion of capital lease obligations		1,289
Accounts payable		3,013
Accrued liabilities		1,466
Deferred revenue		4,505
Total current liabilities		10,273
Capital lease obligations, less current portion		4,075
Total liabilities	$	14,348

Summary of Operating Results for Company's Discontinued Operations

The table below presents the operating results for the Company’s discontinued operations (in thousands). These operating results for 2014, 2013 and 2012 do not necessarily reflect what they would have been had the OCTG business not been classified as a discontinued operation.

	Year Ended December 31,
	2014			2013			2012
Net sales	$	22,225		$	116,111			135,601
Cost of sales		23,881			123,888			138,511
Gross loss		(1,656	)		(7,777	)		(2,910	)
Selling, general, and administrative		396			1,509			816
Impairment of fixed assets		—			27,500			—
Operating loss		(2,052	)		(36,786	)		(3,726	)
Loss on sale of business		(13,497	)		—			—
Interest income		—			47			13
Interest expense		(99	)		(344	)		(411	)
Loss before income taxes		(15,648	)		(37,083	)		(4,124	)
Income tax benefit		(3,934	)		(14,484	)		(2,867	)
Net loss	$	(11,714	)	$	(22,599	)	$	(1,257	)

Summary of Earnings (Loss) per Basic and Diluted Weighted Average Common Shares Outstanding

Earnings (loss) per basic and diluted weighted average common shares outstanding was calculated as follows for the years ended December 31 (in thousands, except per share data):

	2014			2013			2012
Income (loss) from continuing operations	$	(6,173	)	$	21,676		$	17,501
Loss from discontinued operations		(11,714	)		(22,599	)		(1,257	)
Net income (loss)	$	(17,887	)	$	(923	)	$	16,244
Basic weighted-average common shares outstanding		9,515			9,445			9,377
Effect of potentially dilutive common shares(1)		—			89			68
Diluted weighted-average common shares outstanding		9,515			9,534			9,445
Earnings (loss) per basic common share:
Continuing operations	$	(0.65	)	$	2.29		$	1.87
Discontinued operations		(1.23	)		(2.39	)		(0.14	)
Total	$	(1.88	)	$	(0.10	)	$	1.73
Earnings (loss) per diluted common share:
Continuing operations	$	(0.65	)	$	2.27		$	1.85
Discontinued operations		(1.23	)		(2.37	)		(0.13	)
Total	$	(1.88	)	$	(0.10	)	$	1.72
Antidilutive shares excluded from net earnings per diluted common share calculation		65			93			92

(1) Represents the effect of the assumed exercise of stock options and the vesting of restricted stock units and performance stock awards, based on the treasury stock method.

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Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts and Billings in Excess of Costs and Estimated Earnings (Tables)

12 Months Ended

Dec. 31, 2014

Text Block [Abstract]

Schedule of Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts and Billings in Excess of Costs and Estimated Earnings

Billings in excess of costs and estimated earnings on uncompleted contracts represents amounts billed based on the terms of the contracts in advance of costs incurred and revenue earned.

	December 31,
	2014			2013
	(in thousands)
Costs incurred on uncompleted contracts	$	265,552		$	182,709
Estimated earnings		53,744			37,438
		319,296			220,147
Less billings to date		(276,284	)		(173,047	)
	$	43,012		$	47,100
Amounts are presented in the Consolidated Balance Sheets as follows:
Costs and estimated earnings in excess of billings on uncompleted contracts	$	45,847		$	50,468
Billings in excess of costs and estimated earnings on uncompleted contracts		(2,835	)		(3,368	)
	$	43,012		$	47,100

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income (loss)	$ (17,887)	$ (923)	$ 16,244
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	13,606	13,272	16,240
Impairment of goodwill	16,066
Loss on sale of business	13,497
Impairment of fixed assets		27,500
Amortization of intangible assets	540	27	27
Amortization of debt issuance costs	377	634	1,318
Provision for doubtful accounts	70	(1,063)	98
Deferred income taxes	2,894	(7,994)	(4,120)
Loss on disposal of property and equipment	489	256	998
Stock-based compensation expense	2,946	3,060	3,048
Excess tax benefit from stock compensation plans	(553)
Adjustments to contingent consideration	(1,746)
Other, net	12	54	216
Changes in operating assets and liabilities, net of acquired assets and assumed liabilities
Trade and other receivables, net	7,984	(24,212)	28,298
Costs and estimated earnings in excess of billings on uncompleted contracts, net	4,088	19,736	(36,621)
Inventories	6,039	8,261	(5,582)
Refundable income taxes	(3,405)	(1,073)
Prepaid expenses and other assets	754	307	5,480
Accounts payable	(5,273)	1,374	(310)
Deferred revenue	(4,573)	(3,901)	7,764
Accrued and other liabilities	(881)	(15,226)	11,392
Net cash provided by operating activities	35,044	20,089	44,490
Cash flows from investing activities:
Additions to property and equipment	(14,289)	(28,447)	(16,789)
Proceeds from sale of business	29,791
Acquisition of businesses, net of cash acquired		(15,689)
Proceeds from sale of property and equipment	8	1,711	1,072
Issuance of notes receivable		(5,700)	(1,000)
Restricted cash			(2,640)
Other investing activities	31	(126)	60
Net cash provided by (used in) investing activities	15,541	(48,251)	(19,297)
Cash flows from financing activities:
Proceeds from issuance of common stock	28	72	37
Tax withholdings related to net share settlements of restricted share awards and performance shares	(1,283)	(802)	(212)
Excess tax benefit from stock compensation plans	553
Payments on long-term debt	(6,357)	(5,714)	(5,714)
Borrowings on line of credit	230,581	220,721	119,000
Repayments on line of credit	(272,913)	(180,334)	(133,468)
Payments of debt issuance costs			(1,599)
Payments on capital lease obligations	(1,255)	(5,239)	(3,373)
Net cash (used in) provided by financing activities	(50,646)	28,704	(25,329)
Change in cash and cash equivalents	(61)	542	(136)
Cash and cash equivalents, beginning of period	588	46	182
Cash and cash equivalents, end of period	527	588	46
Supplemental disclosure of cash flow information:
Cash paid during the period for interest, net of amounts capitalized	2,271	3,277	4,353
Cash paid during the period for income taxes (net of refunds of $393, $311, and $1,834)	1,982	9,592	5,007
Non-cash investing and financing activities:
Escrow account related to capital lease financing			898
Accrued property and equipment purchases	1,243	1,656	2,777
Capital lease additions	$ 804		$ 142

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Inventories (Tables)

12 Months Ended

Dec. 31, 2014

Inventory Disclosure [Abstract]

Components of Inventories

Inventories are stated at the lower of cost or market and consist of the following (in thousands):

	December 31,
	2014		2013
Short-term inventories:
Raw materials	$	48,005	$	52,598
Work-in-process		1,741		4,902
Finished goods		20,663		49,351
Supplies		2,370		3,541
		72,779		110,392
Long-term inventories:
Finished goods		1,214		1,249
Total inventories	$	73,993	$	111,641

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Segment Information - Segment Information Report of Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Goodwill	$ 5,282	$ 25,760	$ 20,478
Assets	351,882	433,459
Operating Segments [Member]
Segment Reporting Information [Line Items]
Assets	324,814	402,937
Corporate [Member]
Segment Reporting Information [Line Items]
Assets	27,068	30,522
Water Transmission [Member]
Segment Reporting Information [Line Items]
Goodwill	5,300
Water Transmission [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Goodwill	5,282	5,282
Assets	222,365	218,849
Tubular Products [Member]
Segment Reporting Information [Line Items]
Goodwill	16,100
Tubular Products [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Goodwill		20,478	20,478
Assets	$ 102,449	$ 184,088

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Segment Information (Tables)

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Segment Information Report of Statements of Operations

As of December 31, 2014, all material long-lived assets are located in the United States.

	Year Ended December 31,
	2014			2013			2012
	(in thousands)
Net sales from continuing operations:
Water transmission	$	238,545		$	226,427		$	269,203
Tubular products		164,753			133,018			119,699
Total	$	403,298		$	359,445		$	388,902
Gross profit from continuing operations:
Water transmission	$	39,601		$	46,953		$	45,051
Tubular products		975			13,283			14,057
Total	$	40,576		$	60,236		$	59,108
Operating income (loss) from continuing operations:
Water transmission	$	31,490		$	40,343		$	36,278
Tubular products		(16,677	)		11,943			12,061
		14,813			52,286			48,339
Corporate		(14,619	)		(14,751	)		(17,053	)
Total	$	194		$	37,535		$	31,286
Net sales from continuing operations by geographic region:
United States	$	383,344		$	308,345		$	332,859
Other		19,954			51,100			56,043
Total	$	403,298		$	359,445		$	388,902

The following includes discontinued operations within Tubular products:

Depreciation and amortization expense:
Water transmission	$	8,716	$	7,082	$	10,474
Tubular products		5,090		5,963		5,541
		13,806		13,045		16,015
Corporate		340		254		252
Total	$	14,146	$	13,299	$	16,267
Capital expenditures:
Water transmission	$	6,190	$	13,204	$	6,830
Tubular products		7,526		14,354		9,813
		13,716		27,558		16,643
Corporate		573		889		146
Total	$	14,289	$	28,447	$	16,789

Segment Information Report of Balance Sheets

	December 31,
	2014		2013
	(in thousands)
Goodwill:
Water transmission	$	5,282	$	5,282
Tubular products		—		20,478
Total	$	5,282	$	25,760
Total assets:
Water transmission	$	222,365	$	218,849
Tubular products		102,449		184,088
		324,814		402,937
Corporate		27,068		30,522
Total	$	351,882	$	433,459

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Goodwill and Intangible Assets - Summary of Estimated Amortization Expense (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
2015	$ 523
2016	523
2017	495
2018	459
2019	213
Thereafter	1,232
Total	$ 3,445

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Income Taxes - Schedule of Components of Provision for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current:
Federal	$ 4,336	$ 9,097	$ 8,409
State	334	690	278
Total current tax expense	4,670	9,787	8,687
Deferred:
Federal	305	2,631	(416)
State	(324)	(60)	117
Total deferred tax expense (benefit)	(19)	2,571	(299)
Total	$ 4,651	$ 12,358	$ 8,388

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Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net sales	$ 403,298	$ 359,445	$ 388,902
Cost of sales	362,722	299,209	329,794
Gross profit	40,576	60,236	59,108
Selling, general and administrative expense	24,316	22,701	27,822
Impairment of Tubular Products goodwill	16,066
Operating income	194	37,535	31,286
Other income (expense)	108	(289)	(339)
Interest income	466	409	147
Interest expense	(2,290)	(3,621)	(5,205)
Income (loss) before income taxes	(1,522)	34,034	25,889
Income tax expense	4,651	12,358	8,388
Income (loss) from continuing operations	(6,173)	21,676	17,501
Discontinued operations:
Loss from operations of discontinued business	(2,151)	(9,583)	(4,124)
Impairment of fixed assets		(27,500)
Loss on sale of business	(13,497)
Income tax benefit	(3,934)	(14,484)	(2,867)
Loss on discontinued operations	(11,714)	(22,599)	(1,257)
Net Income (loss)	(17,887)	(923)	16,244
Basic earnings (loss) per share
Continuing operations	$ (0.65)	$ 2.29	$ 1.87
Discontinued operations	$ (1.23)	$ (2.39)	$ (0.14)
Net Income (loss) per share	$ (1.88)	$ (0.10)	$ 1.73
Diluted earnings (loss) per share
Continuing operations	$ (0.65)	$ 2.27	$ 1.85
Discontinued operations	$ (1.23)	$ (2.37)	$ (0.13)
Net Income (loss) per share assuming dilution	$ (1.88)	$ (0.10)	$ 1.72
Shares used in per share calculations:
Basic	9,515	9,445	9,377
Diluted	9,515	9,534	9,445
Tubular Products [Member]
Impairment of Tubular Products goodwill	$ 16,066	$ 0	$ 0

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Summary of Significant Accounting Policies - Summary of Earnings (Loss) per Basic and Diluted Weighted Average Common Shares Outstanding (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Income from continuing operations									$ (6,173)	$ 21,676	$ 17,501
Loss from discontinued operations									(11,714)	(22,599)	(1,257)
Net income (loss)	$ (13,996)	$ 5,021	$ 3,192	$ (12,104)	$ (17,006)	$ 1,016	$ 5,561	$ 9,506	$ (17,887)	$ (923)	$ 16,244
Basic weighted-average common shares outstanding									9,515	9,445	9,377
Effect of potentially dilutive common shares										89	68
Diluted weighted-average common shares outstanding									9,515	9,534	9,445
Earnings (loss) per basic common share:
Continuing operations	$ (1.47)	$ 0.62	$ 0.34	$ (0.13)	$ 0.26	$ 0.29	$ 0.59	$ 1.16	$ (0.65)	$ 2.29	$ 1.87
Discontinued operations		$ (0.09)		$ (1.14)	$ (2.06)	$ (0.18)		$ (0.15)	$ (1.23)	$ (2.39)	$ (0.14)
Total	$ (1.47)	$ 0.53	$ 0.34	$ (1.27)	$ (1.80)	$ 0.11	$ 0.59	$ 1.01	$ (1.88)	$ (0.10)	$ 1.73
Earnings (loss) per diluted common share:
Continuing operations	$ (1.47)	$ 0.61	$ 0.33	$ (0.13)	$ 0.25	$ 0.29	$ 0.59	$ 1.16	$ (0.65)	$ 2.27	$ 1.85
Discontinued operations		$ (0.09)		$ (1.14)	$ (2.03)	$ (0.18)		$ (0.16)	$ (1.23)	$ (2.37)	$ (0.13)
Total	$ (1.47)	$ 0.52	$ 0.33	$ (1.27)	$ (1.78)	$ 0.11	$ 0.59	$ 1.00	$ (1.88)	$ (0.10)	$ 1.72
Antidilutive shares excluded from net earnings per diluted common share calculation									65	93	92

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Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Additional Paid In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]
Balance at Dec. 31, 2011	$ 240,267	$ 94	$ 109,348	$ 133,137	$ (2,312)
Balance, Shares at Dec. 31, 2011		9,353,201
Net income (loss)	16,244			16,244
Other comprehensive (loss) income:
Foreign currency cash flow hedge, net of tax expense (benefit)	(99)				(99)
Pension liability adjustment, net of tax expense (benefit)	138				138
Issuance of common stock under stock compensation plans	(175)		(175)
Issuance of common stock under stock compensation plans, shares		29,793
Tax benefit from stock compensation plans	9		9
Stock-based compensation expense	3,048		3,048
Balance at Dec. 31, 2012	259,432	94	112,230	149,381	(2,273)
Balance, Shares at Dec. 31, 2012		9,382,994
Net income (loss)	(923)			(923)
Other comprehensive (loss) income:
Foreign currency cash flow hedge, net of tax expense (benefit)	99				99
Pension liability adjustment, net of tax expense (benefit)	913				913
Issuance of common stock under stock compensation plans	(730)		(730)
Issuance of common stock under stock compensation plans, shares		66,305
Tax deficiency from stock compensation plans	(1)		(1)
Stock-based compensation expense	3,060		3,060
Balance at Dec. 31, 2013	261,850	94	114,559	148,458	(1,261)
Balance, Shares at Dec. 31, 2013		9,449,299
Net income (loss)	(17,887)			(17,887)
Other comprehensive (loss) income:
Foreign currency cash flow hedge, net of tax expense (benefit)	15				15
Pension liability adjustment, net of tax expense (benefit)	(587)				(587)
Issuance of common stock under stock compensation plans	(1,255)	1	(1,256)
Issuance of common stock under stock compensation plans, shares		70,768
Tax benefit from stock compensation plans	553		553
Stock-based compensation expense	2,946		2,946
Balance at Dec. 31, 2014	$ 245,635	$ 95	$ 116,802	$ 130,571	$ (1,833)
Balance, Shares at Dec. 31, 2014		9,520,067

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Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Recurring [Member], USD $)	Dec. 31, 2014	Dec. 31, 2013
Financial Assets
Deferred compensation plan	$ 6,237,000	$ 6,000,000
Derivatives	32,000	1,000
Total Assets	6,269,000	6,001,000
Financial Liabilities
Contingent consideration	(2,679,000)	(4,425,000)
Derivatives	(5,000)	(1,000)
Total Liabilities	(2,684,000)	(4,426,000)
Level 1 [Member]
Financial Assets
Deferred compensation plan	4,953,000	4,944,000
Total Assets	4,953,000	4,944,000
Level 2 [Member]
Financial Assets
Deferred compensation plan	1,284,000	1,056,000
Derivatives	32,000	1,000
Total Assets	1,316,000	1,057,000
Financial Liabilities
Derivatives	(5,000)	(1,000)
Total Liabilities	(5,000)	(1,000)
Level 3 [Member]
Financial Liabilities
Contingent consideration	(2,679,000)	(4,425,000)
Total Liabilities	$ (2,679,000)	$ (4,425,000)

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Leases (Tables)

12 Months Ended

Dec. 31, 2014

Leases [Abstract]

Schedule of Future Minimum Lease Payments for Capital Leases

The future minimum payments under the Company’s capital leases are as follows (in thousands):

2015	$	2,283
2016		169
2017		68
2018		—
2019		—
Thereafter		—
Total minimum lease payments		2,520
Amount representing interest		125
Present value of minimum lease payments with average interest rates of 9.66%		2,395
Current portion of capital lease obligation		2,170
Capital lease obligation, less current portion	$	225

Schedule of Future Minimum Lease Payments for Operating Leases

Future minimum payments as of December 31, 2014 for operating leases with initial or remaining terms in excess of one year are (in thousands):

2015	$	2,557
2016		2,451
2017		2,191
2018		1,067
2019		651
Thereafter		2,491
	$	11,408

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Share-Based Compensation Plans - Summary of Status of Company's Stock Options (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Options Outstanding, Beginning Balance	40,000	47,000	71,597
Options Outstanding, granted	0	0	0
Options Outstanding, exercised	(2,000)	(7,000)	(24,597)
Options Outstanding, cancelled	0	0	0
Options Outstanding, Ending Balance	38,000	40,000	47,000
Options, Weighted Average Exercise Price, Beginning Balance	$ 25.44	$ 23.19	$ 21.26
Exercisable and Outstanding, Options	38,000
Options granted, Weighted Average Exercise Price	$ 0	$ 0	$ 0
Options exercised, Weighted Average Exercise Price	$ 14.00	$ 10.31	$ 17.58
Options canceled, Weighted Average Exercise Price	$ 0	$ 0	$ 0
Options, Weighted Average Exercise Price, Ending Balance	$ 26.05	$ 25.44	$ 23.19
Exercisable and Outstanding, Weighted Average Exercise Price	$ 26.05
Exercisable and Outstanding, Weighted Average Remaining Contractual Life	3 years 8 months 5 days
Exercisable and Outstanding, Aggregate Intrinsic Value	$ 424

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

13. COMMITMENTS AND CONTINGENCIES:

Portland Harbor Superfund

On December 1, 2000, a section of the lower Willamette River known as the Portland Harbor Site was included on the National Priorities List at the request of the United States Environmental Protection Agency (the “EPA”). While the Company’s Portland, Oregon manufacturing facility does not border the Willamette River, an outfall from the facility’s stormwater system drains into a neighboring property’s privately owned stormwater system and slip. Since the listing of the site, the Company was notified by the EPA and the Oregon Department of Environmental Quality (“ODEQ”) of potential liability under the Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”). In 2008, the Company was asked to file information disclosure reports with the EPA (CERCLA 104 (e) information request). By agreement with the EPA, ODEQ is responsible for overseeing remedial investigation and source control activities for all upland sites to investigate sources and prevent future contamination to the river. A remedial investigation and feasibility study (“RI/FS”) of the Portland Harbor Site has been directed by a group of 14 potentially responsible parties known as the Lower Willamette Group (the “LWG”) under agreement with the EPA. The Company made a payment of $0.2 million to the LWG in June 2007 as part of an interim settlement, and is under no obligation to make any further payment. The final draft remedial investigation (“RI”) was submitted to the EPA by the LWG in fall of 2011 and the draft feasibility study (“FS”) was submitted by the LWG to the EPA in March 2012. The draft FS identifies ten possible remedial alternatives which range in estimated cost from approximately $169 million to $1.76 billion and estimates a range of two to 28 years to implement the remedial work, depending on the selected alternative. The report does not determine who is responsible for the costs of cleanup or how the cleanup costs will be allocated among the potentially responsible parties. As of the date of this filing, the final RI and the revised FS are pending approval of the EPA.

In 2001, groundwater containing elevated volatile organic compounds (“VOCs”) was identified in one localized area of leased property adjacent to the Portland facility furthest from the river. Assessment work in 2002 and 2003 to further characterize the groundwater was consistent with the initial conclusion that the source of the VOCs is located off of Company-owned property. In February 2005, the Company entered into a Voluntary Agreement for Remedial Investigation and Source Control Measures (the “Agreement”) with ODEQ. The Company is one of many Upland Source Control Sites working with ODEQ on Source Control and is considered a “medium” priority site by ODEQ indicating more investigation was recommended. The Company performed RI work required under the Agreement and submitted a draft RI/Source Control Evaluation Report (“SCE”) in December 2005 and a revised draft RI/SCE Report in January 2014 (2014 RI/SCE Report). The conclusions of the report include: (1) the VOCs found in the groundwater do not present an unacceptable risk to human or ecological receptors in the Willamette River; (2) there is no evidence at this time showing a connection between detected VOCs in groundwater and Willamette River sediments; (3) the interim remedial measure to conduct a limited excavation of soil and complete paving the site was completed; (4) a state-of-the art stormwater treatment system was installed; and (5) an area of stained soil was characterized and remediated.

During the localized soil excavation in 2011, additional stained soil was discovered. At the request of ODEQ, the Company developed an additional Work Plan to characterize the nature and extent of soil and/or groundwater impacts from the staining. The Company began implementing this Work Plan in the second quarter of 2012 and submitted sampling results to ODEQ in the third quarter of 2012. Comments from ODEQ were received in November 2012. In February 2013, ODEQ clarified its comments from November 2012, and the Company completed its second round of groundwater sampling for the Stained Soil Investigation Area in May and November 2013. The results were reported to ODEQ in January 2014 in the RI/SCE Report. Comments were received from ODEQ in June 2014 and will be addressed in a revised report.

The Company spent $0.1 million for further Source Control work in 2014, and less than $0.1 million in 2013.

Concurrent with the activities of the EPA and ODEQ, the Portland Harbor Natural Resources Trustee Council (“Trustees”) sent some or all of the same parties, including the Company, a notice of intent to perform a Natural Resource Damage Assessment (“NRDA”) for the Portland Harbor Site to determine the nature and extent of natural resource damages under CERCLA section 107. The Trustees for the Portland Harbor Site consist of representatives from several Northwest Indian Tribes, three federal agencies and one state agency. The Trustees act independently of the EPA and ODEQ. The Trustees have encouraged potentially responsible parties to voluntarily participate in the funding of their injury assessments and several of those parties have agreed to do so. In June 2014, the Company agreed to participate in the injury assessment process, which included funding $0.4 million of the assessment; of this amount, $0.2 million was paid in July 2014 and the remainder was paid in January 2015. The Company has not assumed any additional payment obligations or liabilities with the participation with the NRDA.

The Company’s potential liability is a portion of the costs of the remedy the EPA will select for the entire Portland Harbor Superfund Site. The cost of that remedy is expected to be allocated among more than 100 potentially responsible parties. Because of the large number of responsible parties and the variability in the range of remediation alternatives, the Company is unable to estimate an amount or an amount within a range of costs for its obligation with respect to the Portland Harbor Site matters, and no further adjustment to the consolidated financial statements has been recorded as of the date of this filing. The Company has insurance policies for defense costs, as well as indemnification policies it believes will provide reimbursement for any share of the remediation assessed. However, the Company can provide no assurance that those policies will cover all of the costs which the Company may incur.

In December 2014, a federal district court approved settlements between the Company and two of its insurance carriers. The Company released its interests in the related insurance policies, and received $2.6 million in January 2015 for reimbursement of past indemnification and defense costs incurred by the Company associated with the Portland Harbor Site, substantially all of which reduced cost of sales in 2014. As of December 31, 2014, $2.6 million was included in trade and other receivables. Notwithstanding these settlements, the Company continues to have insurance coverage for indemnification and defense costs related to Portland Harbor Site as described above.

Houston Environmental Cleanup

In connection with the Company’s sale of its OCTG business, a Limited Phase II Environmental Site Assessment was conducted at the Houston, Texas plant and completed in March 2014, which revealed the presence of VOCs in the groundwater and certain metals in the soil. In June 2014, the Company was admitted into the Texas Commission on Environmental Quality (“TCEQ”) Voluntary Cleanup Program to address these issues and obtain a Certificate of Completion from TCEQ. The cost of any potential cleanup will not be covered by insurance. However, any costs incurred will be reimbursed by the purchaser of the OCTG business see Note 1, “Summary of Significant Accounting Policies – Business Acquisitions and Disposals” if the purchaser of the OCTG business exercises its option to purchase the property under certain circumstances after the Certificate of Completion is obtained. As the Company is in the early stages of this process, no adjustment to the consolidated financial statements has been recorded as of the date of this filing. We expect to be able to estimate the potential costs by mid-2015.

All Sites

The Company operates its facilities under numerous governmental permits and licenses relating to air emissions, storm water run-off, and other environmental matters. The Company’s operations are also governed by many other laws and regulations, including those relating to workplace safety and worker health, principally the Occupational Safety and Health Act and regulations there under which, among other requirements, establish noise and dust standards. The Company believes it is in material compliance with its permits and licenses and these laws and regulations, and the Company does not believe that future compliance with such laws and regulations will have a material adverse effect on its financial position, results of operations or cash flows.

From time to time, the Company is involved in litigation relating to claims arising out of its operations in the normal course of its business. The Company maintains insurance coverage against potential claims in amounts that are believed to be adequate. To the extent that insurance does not cover legal, defense, and indemnification costs associated with a loss contingency, such costs will be expensed as incurred. The Company believes that it is not presently a party to any other litigation, the outcome of which would have a material adverse effect on its business, financial condition, results of operations or cash flows.

Guarantees

The Company has entered into certain stand-by letters of credit that total $2.3 million at December 31, 2014. The stand-by letters of credit relate to workers’ compensation insurance.

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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

The following table summarizes information regarding the Company’s financial assets and financial liabilities that are measured at fair value on a recurring basis (in thousands):

Description	Balance at December 31, 2014			Level 1		Level 2			Level 3
Financial Assets
Deferred compensation plan	$	6,237		$	4,953	$	1,284		$	—
Derivatives		32			—		32			—
Total Assets	$	6,269		$	4,953	$	1,316		$	—
Financial Liabilities
Contingent consideration	$	(2,679	)	$	—	$	—		$	(2,679	)
Derivatives		(5	)		—		(5	)		—
Total Liabilities	$	(2,684	)	$	—	$	(5	)	$	(2,679	)
Description	Balance at December 31, 2013			Level 1		Level 2			Level 3
Financial Assets
Deferred compensation plan	$	6,000		$	4,944	$	1,056		$	—
Derivatives		1			—		1			—
Total Assets	$	6,001		$	4,944	$	1,057		$	—
Financial Liabilities
Contingent consideration	$	(4,425	)	$	—	$	—		$	(4,425	)
Derivatives		(1	)		—		(1	)		—
Total Liabilities	$	(4,426	)	$	—	$	(1	)	$	(4,425	)

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Accumulated Other Comprehensive Loss

12 Months Ended

Dec. 31, 2014

Equity [Abstract]

Accumulated Other Comprehensive Loss

15. ACCUMULATED OTHER COMPREHENSIVE LOSS

Accumulated other comprehensive loss consists of the following (in thousands):

	December 31,
	2014			2013
Pension liability adjustment, net of tax benefit of $1,108 and $704	$	(1,862	)	$	(1,275	)
Deferred gain (loss) on cash flow derivatives, net of tax expense of $14 and benefit of $9		29			14
Total	$	(1,833	)	$	(1,261	)

The following table summarizes changes in the components of accumulated other comprehensive loss during the twelve months ended December 31, 2014 and December 31, 2013 (in thousands). All amounts are net of tax:

	Defined Benefit Pension Items			Gains (Losses) on Cash Flow Hedges			Total
Balance, December 31, 2012	$	(2,188	)	$	(85	)	$	(2,273	)
Other comprehensive income before reclassifications		674			171			845
Amounts reclassified from accumulated other comprehensive income (loss)		239			(72	)		167
Net current period adjustments to other comprehensive income		913			99			1,012
Balance, December 31, 2013	$	(1,275	)	$	14		$	(1,261	)
Other comprehensive income (loss) before reclassifications		(701	)		17			(684	)
Amounts reclassified from accumulated other comprehensive income (loss)		114			(2	)		112
Net current period adjustments to other comprehensive income (loss)		(587	)		15			(572	)
Balance, December 31, 2014	$	(1,862	)	$	29		$	(1,833	)

The following table provides additional detail about accumulated other comprehensive income (loss) components which were reclassified to the consolidated statement of operations during the twelve months ended December 31, 2014, 2013 and 2012 (in thousands):

Details about Accumulated Other Comprehensive Income (Loss) Components	Amount reclassified from Accumulated Other Comprehensive Income (Loss)									Affected line item in the Consolidated Statements of Operations
	2014			2013			2012
Defined Benefit Pension Items
Net periodic pension cost	$	(182	)	$	(372	)	$	(417	)	Cost of sales
Associated tax benefit		68			133			104		Income tax expense
	$	(114	)	$	(239	)	$	(313	)	Net of tax
Deferred gain on cash flow derivatives
Gain on cash flow derivatives	$	6		$	114		$	(40	)	Net sales
Hedge ineffectiveness		(3	)		—			—		Net sales
Associated tax expense		(1	)		(42	)		19		Income tax expense
	$	2		$	72		$	(21	)	Net of tax
Total reclassifications for the period	$	(112	)	$	(167	)	$	(334	)

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Share-Based Compensation Plans - Summary of Status of Company's RSUs and PSAs (Detail) (Restricted Stock Units and Performance Stock Awards [Member], USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restricted Stock Units and Performance Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested RSUs and PSAs, Beginning Balance	257,087	243,141	193,981
RSUs and PSAs granted	87,353	117,966	115,306
Unvested RSUs and PSAs cancelled	(32,756)	(16,002)	(39,306)
RSUs and PSAs vested	(80,469)	(88,018)	(26,840)
Unvested RSUs and PSAs, Ending Balance	231,215	257,087	243,141
Unvested RSUs and PSAs, Weighted Average Grant Date Fair Value, Beginning Balance	$ 30.69	$ 26.11	$ 24.41
RSUs and PSAs granted, Weighted Average Grant Date Fair Value	$ 41.76	$ 34.24	$ 29.06
Unvested RSUs and PSAs cancelled, Weighted Average Grant Date Fair Value	$ 32.36	$ 27.45	$ 28.44
RSUs and PSAs vested, Weighted Average Grant Date Fair Value	$ 25.81	$ 23.37	$ 23.13
Unvested RSUs and PSAs, Weighted Average Grant Date Fair Value, Ending Balance	$ 36.34	$ 30.69	$ 26.11

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Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Stockholders' Equity [Abstract]
Foreign currency cash flow hedge, tax expense (benefit)	$ 9	$ 59	$ 94
Pension liability adjustment, tax expense (benefit)	$ 285	$ 540	$ 50

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Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (17,887)	$ (923)	$ 16,244
Other comprehensive income (loss):
Pension liability adjustment, net of tax	(587)	913	138
Deferred gain (loss) on cash flow derivatives, net of tax	15	99	(99)
Other comprehensive income (loss)	(572)	1,012	39
Comprehensive income (loss)	$ (18,459)	$ 89	$ 16,283

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Fair Value Measurements

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

Fair Value Measurements

8. FAIR VALUE MEASUREMENTS:

Assets/Liabilities Measured and Recorded at Fair Value on a Recurring Basis

The Company records its financial assets and liabilities at fair value, which is defined as the price that would be received to sell an asset or paid to transfer a liability, in the principal or most advantageous market for the asset or liability, in an orderly transaction between market participants at the measurement date. The guidance for fair value measurements also applies to nonrecurring fair value measurements of nonfinancial assets and nonfinancial liabilities.

The authoritative guidance establishes a fair value hierarchy which prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. These levels are: Level 1 (inputs are quoted prices in active markets for identical assets or liabilities); Level 2 (inputs are other than quoted prices that are observable, either directly or indirectly through corroboration with observable market data); and Level 3 (inputs are unobservable, with little or no market data that exists, such as internal financial forecasts). The Company is required to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.

The following table summarizes information regarding the Company’s financial assets and financial liabilities that are measured at fair value on a recurring basis (in thousands):

Description	Balance at December 31, 2014			Level 1		Level 2			Level 3
Financial Assets
Deferred compensation plan	$	6,237		$	4,953	$	1,284		$	—
Derivatives		32			—		32			—
Total Assets	$	6,269		$	4,953	$	1,316		$	—
Financial Liabilities
Contingent consideration	$	(2,679	)	$	—	$	—		$	(2,679	)
Derivatives		(5	)		—		(5	)		—
Total Liabilities	$	(2,684	)	$	—	$	(5	)	$	(2,679	)
Description	Balance at December 31, 2013			Level 1		Level 2			Level 3
Financial Assets
Deferred compensation plan	$	6,000		$	4,944	$	1,056		$	—
Derivatives		1			—		1			—
Total Assets	$	6,001		$	4,944	$	1,057		$	—
Financial Liabilities
Contingent consideration	$	(4,425	)	$	—	$	—		$	(4,425	)
Derivatives		(1	)		—		(1	)		—
Total Liabilities	$	(4,426	)	$	—	$	(1	)	$	(4,425	)

The deferred compensation plan assets consists of cash and several publicly traded stock and bond mutual funds, valued using quoted market prices in active markets classified as Level 1 within the fair value hierarchy, as well as securities that are not actively traded on major exchanges, valued using the NAV of the underlying investments classified as Level 2 within the fair value hierarchy. The Company’s derivatives consist of foreign currency forward contracts, which are accounted for as cash flow hedges, and are valued using various pricing models or discounted cash flow analyses that incorporate observable market parameters, such as interest rate yield curves and currency rates, classified as Level 2 within the valuation hierarchy. Derivative valuations incorporate credit risk adjustments that are necessary to reflect the probability of default by the counterparty or the Company.

The contingent consideration liability represents the probability weighted contingent payment as a percentage of high, mid, and low revenue projections for the following three fiscal years following the acquisition of Permalok on December 30, 2013. Our fair value estimate of this liability was $2.7 million at December 31, 2014 and $4.4 million at December 31, 2013. The inputs used to measure contingent consideration are classified as Level 3 within the valuation hierarchy. The valuation is not supported by market criteria and reflects the Company’s internal revenue forecasts. Changes in the fair value of the contingent consideration payment will be reflected in cost of sales during the period which the change in the estimated fair value is calculated.

The net carrying amounts of cash and cash equivalents, trade and other receivables, accounts payable, accrued liabilities and borrowings on line of credit approximate fair value due to the short-term nature of these instruments.

Prior to final payoff in June 2014, the Company was obligated to repay the carrying value of the Company’s long-term debt. The fair value of the Company’s debt was calculated using a coupon rate on borrowings with similar maturities, current remaining average life to maturity, borrower credit quality, and current market conditions all of which are classified as Level 2 inputs within the valuation hierarchy. At December 31, 2013, the fair value of the Company’s long-term debt, including the current portion, was $6.3 million and the carrying value was $6.4 million.

Assets Measured and Recorded at Fair Value on a Non-Recurring Basis

The Company measures its financial assets, including loans receivable and non-marketable equity method investments, at fair value on a non-recurring basis when they are determined to be other-than-temporarily impaired. The fair value of these assets is determined using Level 3 unobservable inputs due to the absence of observable market inputs, and because the valuations require management judgment. There were no material impairment charges recorded on investments in 2014. During 2013 and 2012, there were $0.3 million and $0, respectively, of impairment charges recorded on investments. The impairment charges recorded on investments were included in other expense (income) in the consolidated statement of operations.

If required as part of its annual goodwill impairment assessment, the Company calculates the business enterprise value of applicable reporting units. This calculation uses a weighted average of income and market approaches, and is classified as Level 3 in the valuation hierarchy. The income approach is primarily driven by inputs from the Company’s internal financial forecasts. The market approach incorporates inputs from market participant data, as well as inputs derived from Company assumptions. For 2014, this analysis resulted in the impairment of Tubular Products goodwill of $16.1 million. There were no impairments in 2013 or 2012.

As part of its analysis of impairment of long lived asset groups as of December 31, 2013, the Company determined the fair value of two of its asset groups using third party appraisals. The inputs used in the third party appraisals are classified as Level 3 in the valuation hierarchy, due to limited observed market data and because the valuations require significant judgments. The analysis resulted in a long-lived asset group impairment of $27.5 million, which is included in loss from discontinued operations for 2013.

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Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Mar. 09, 2015	Jun. 30, 2014
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	NWPX
Entity Registrant Name	NORTHWEST PIPE CO
Entity Central Index Key	0001001385
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		9,554,222
Entity Public Float			$ 333,023,765

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Derivative Financial Instruments and Hedging Activities

12 Months Ended

Dec. 31, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments and Hedging Activities

9. DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES:

The Company conducts business in various foreign countries and, from time to time, settles transactions in foreign currencies. The Company has established a program that utilizes foreign currency forward contracts to offset the risk associated with the effects of certain foreign currency exposures, typically arising from sales contracts denominated in Canadian dollars. Instruments that do not qualify for cash flow hedge accounting treatment are re-measured at fair value on each balance sheet date and resulting gains and losses are recognized in net income. There were no derivative contracts not designated as hedges as of December 31, 2014. As of December 31, 2013, the total notional amount of the derivative contracts not designated as hedges was $25,000 (CAD$27,000). As of December 31, 2014 and 2013, the total notional amount of the derivative contracts designated as hedges was $1.3 million (CAD$1.5 million) and $3.8 million (CAD$4.1 million), respectively. Derivative assets are included within prepaid expenses and other and derivative liabilities are included within accrued liabilities within the consolidated balance sheets. All of the Company’s foreign currency forward contracts are subject to an enforceable master netting arrangement. The Company presents its foreign currency forward contract assets and liabilities within the consolidated balance sheet at their gross fair values.

For each derivative contract entered into in which the Company seeks to obtain cash flow hedge accounting treatment, the Company formally documents all relationships between hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking the hedge transaction, the nature of the risk being hedged, how the hedging instrument’s effectiveness in offsetting the hedged risk will be assessed prospectively and retrospectively, and a description of the method of measuring ineffectiveness. This process includes linking all derivatives to specific firm commitments or forecasted transactions and designating the derivatives as cash flow hedges. The Company also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivative contracts that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items. The effective portion of these hedged items is reflected in other comprehensive income on the consolidated statement of stockholders’ equity. If it is determined that a derivative contract is not highly effective, or that it has ceased to be a highly effective hedge, the Company will be required to discontinue hedge accounting with respect to that derivative contract prospectively.

All of the Company’s Canadian dollar forward contracts have maturities less than 12 months as of December 31, 2014.

For the years ended December 31, 2014, 2013 and 2012, gains (losses) of $0.1 million, ($0.1) million and ($0.4) million, respectively, from derivative contracts not designated as hedging instruments were recognized in net sales from continuing operations. At December 31, 2014, there is $43,000 of unrealized pretax gain on outstanding derivatives included in accumulated other comprehensive loss, substantially all of which is expected to be reclassified to net sales from continuing operations within the next 12 months as a result of underlying hedged transactions also being recorded in net sales from continuing operations. See Note 15, “Accumulated Other Comprehensive Loss” for additional quantitative information regarding derivative gains and losses.

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Accumulated Other Comprehensive Loss - Schedule of Reclassifications of Accumulated Other Comprehensive Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of Sales									$ (362,722)	$ (299,209)	$ (329,794)
Tax (expense) benefit									(4,651)	(12,358)	(8,388)
Net Income (loss)	(13,996)	5,021	3,192	(12,104)	(17,006)	1,016	5,561	9,506	(17,887)	(923)	16,244
Net sales	102,158	116,505	101,988	82,647	85,641	78,527	87,942	107,335	403,298	359,445	388,902
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Income (loss)									(112)	(167)	(334)
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) [Member] | Defined Benefit Pension Items [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Income (loss)									(114)	(239)	(313)
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) [Member] | Defined Benefit Pension Items [Member] | Net Periodic Pension Cost [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of Sales									(182)	(372)	(417)
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) [Member] | Defined Benefit Pension Items [Member] | Associated Tax Expense Benefit [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax (expense) benefit									68	133	104
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) [Member] | Gains (Losses) on Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Income (loss)									2	72	(21)
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) [Member] | Gains (Losses) on Cash Flow Hedges [Member] | Associated Tax Expense Benefit [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax (expense) benefit									(1)	(42)	19
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) [Member] | Gains (Losses) on Cash Flow Hedges [Member] | Gain on Cash Flow Derivative [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales									6	114	(40)
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) [Member] | Gains (Losses) on Cash Flow Hedges [Member] | Hedge ineffectiveness [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales									$ (3)

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 527	$ 588
Trade and other receivables, less allowance for doubtful accounts of $755 and $685	58,310	72,470
Costs and estimated earnings in excess of billings on uncompleted contracts	45,847	50,468
Inventories	72,779	110,392
Refundable income taxes	5,031	1,073
Deferred income taxes	5,487	6,208
Prepaid expenses and other	7,258	2,381
Total current assets	195,239	243,580
Property and equipment, net	132,595	143,061
Goodwill	5,282	25,760
Other assets	18,766	21,058
Total assets	351,882	433,459
Current liabilities:
Current portion of long-term debt		5,714
Current portion of capital lease obligations	2,170	2,216
Accounts payable	15,480	21,731
Accrued liabilities	8,752	10,302
Deferred revenue	319	4,892
Billings in excess of costs and estimated earnings on uncompleted contracts	2,835	3,368
Total current liabilities	29,556	48,223
Borrowings on line of credit	45,587	87,919
Long-term debt, less current portion		643
Capital lease obligations, less current portion	225	5,679
Deferred income taxes	14,015	11,842
Pension and other long-term liabilities	16,864	17,303
Total liabilities	106,247	171,609
Commitments and contingencies (Note 13)
Stockholders' equity:
Preferred stock, $.01 par value, 10,000,000 shares authorized, none issued or outstanding
Common stock, $.01 par value, 15,000,000 shares authorized, 9,520,067 and 9,449,299 shares issued and outstanding	95	94
Additional paid-in-capital	116,802	114,559
Retained earnings	130,571	148,458
Accumulated other comprehensive loss	(1,833)	(1,261)
Total stockholders' equity	245,635	261,850
Total liabilities and stockholders' equity	$ 351,882	$ 433,459

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Inventories

12 Months Ended

Dec. 31, 2014

Inventory Disclosure [Abstract]

Inventories

3. INVENTORIES:

Inventories are stated at the lower of cost or market and consist of the following (in thousands):

	December 31,
	2014		2013
Short-term inventories:
Raw materials	$	48,005	$	52,598
Work-in-process		1,741		4,902
Finished goods		20,663		49,351
Supplies		2,370		3,541
		72,779		110,392
Long-term inventories:
Finished goods		1,214		1,249
Total inventories	$	73,993	$	111,641

Long-term inventories are recorded in other assets.

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Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts and Billings in Excess of Costs and Estimated Earnings

12 Months Ended

Dec. 31, 2014

Text Block [Abstract]

Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts and Billings in Excess of Costs and Estimated Earnings

2. COSTS AND ESTIMATED EARNINGS IN EXCESS OF BILLINGS ON UNCOMPLETED CONTRACTS AND BILLINGS IN EXCESS OF COSTS AND ESTIMATED EARNINGS:

Costs and estimated earnings in excess of billings on uncompleted contracts represents revenue earned under the percentage-of-completion method but not yet billable based on the terms of the contracts. These amounts are billed based on the terms of the contracts, which include achievement of milestones, partial shipments or completion of the contracts. Billings in excess of costs and estimated earnings on uncompleted contracts represents amounts billed based on the terms of the contracts in advance of costs incurred and revenue earned.

	December 31,
	2014			2013
	(in thousands)
Costs incurred on uncompleted contracts	$	265,552		$	182,709
Estimated earnings		53,744			37,438
		319,296			220,147
Less billings to date		(276,284	)		(173,047	)
	$	43,012		$	47,100
Amounts are presented in the Consolidated Balance Sheets as follows:
Costs and estimated earnings in excess of billings on uncompleted contracts	$	45,847		$	50,468
Billings in excess of costs and estimated earnings on uncompleted contracts		(2,835	)		(3,368	)
	$	43,012		$	47,100

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Income Taxes

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Income Taxes

14. INCOME TAXES:

The components of income tax expense for continuing operations are as follows:

	Year Ended December 31,
	2014			2013			2012
	(in thousands)
Current:
Federal	$	4,336		$	9,097		$	8,409
State		334			690			278
Total current tax expense		4,670			9,787			8,687
Deferred:
Federal		305			2,631			(416	)
State		(324	)		(60	)		117
Total deferred tax expense (benefit)		(19	)		2,571			(299	)
	$	4,651		$	12,358		$	8,388

The difference between the Company’s effective income tax rates and the statutory United States federal income tax rate of 35% is explained as follows:

	Year Ended December 31,
	2014			2013			2012
	(in thousands)
Provision (benefit) at statutory rate of 35%	$	(532	)	$	11,921		$	9,083
State provision, net of federal benefit		(96	)		370			601
Federal and state tax credits		(91	)		(525	)		(379	)
Domestic manufacturing deduction		—			(641	)		(762	)
Change in valuation allowance		9			954			—
Uncertain tax positions		5			(7	)		(67	)
Goodwill impairment (nondeductible)		5,623			—			—
Nondeductible expenses		207			345			247
Nontaxable adjustment to contingent consideration		(611	)		—			—
Other		137			(59	)		(335	)
	$	4,651		$	12,358		$	8,388
Effective tax rate		305.6	%		36.3	%		32.4	%

The tax effect of temporary differences that give rise to significant portions of deferred tax assets and liabilities is presented below:

	December 31,
	2014			2013
	(in thousands)
Current deferred tax assets:
Costs and estimated earnings in excess of billings on uncompleted contracts, net	$	2,186		$	2,384
Accrued employee benefits		841			951
Inventories		1,937			2,671
Trade receivable, net		372			319
Net operating loss carryforwards		93			500
Other		1,299			520
		6,728			7,345
Valuation allowance		(719	)		(500	)
		6,009			6,845
Current deferred tax liabilities:
Prepaid expenses		(522	)		(637	)
Current deferred tax assets, net		5,487			6,208
Noncurrent deferred tax assets:
Net operating loss carryforwards		489			211
Tax credit carryforwards		996			478
Accrued employee benefits		4,483			3,740
Other assets		6,067			5,520
Other		142			138
		12,177			10,087
Valuation allowance		(1,139	)		(1,394	)
		11,038			8,693
Noncurrent deferred tax liabilities:
Property and equipment		(23,903	)		(19,343	)
Intangible assets		(1,150	)		(1,192	)
Noncurrent deferred tax liabilities, net		(14,015	)		(11,842	)
Net deferred tax liabilities	$	(8,528	)	$	(5,634	)

As of December 31, 2014, the Company had approximately $20 million of state net operating loss carryforwards which expire on various dates between 2018 and 2031. The Company also had state tax carryforwards of $1.5 million, which begin to expire in 2015.

The Company considers the earnings of the Mexican subsidiary to be indefinitely reinvested outside the United States on the basis of estimates that future domestic cash generation will be sufficient to meet future domestic cash needs. Should the Company decide to repatriate the foreign earnings, the income tax provision would be adjusted in the period it is determined that the earnings will no longer be indefinitely reinvested outside the United States, and a deferred tax liability of approximately $0.9 million related to the United States federal and state income taxes and foreign withholding taxes on approximately $2.5 million of undistributed foreign earnings would be recorded.

The Company files income tax returns in the United States Federal jurisdiction, in a limited number of foreign jurisdictions, and in many state jurisdictions. Internal Revenue Service examinations have been completed for years prior to 2011. With few exceptions, the Company is no longer subject to United States Federal or state income tax examinations for years before 2010.

A summary of the changes in the unrecognized tax benefits during the years ended December 31, 2014, 2013 and 2012 is presented below (in thousands):

	2014			2013			2012
Unrecognized tax benefits, beginning of year	$	6,207		$	5,245		$	309
Decreases for settlements		(3,265	)		—			—
Decreases for lapse in statute of limitations		(115	)		—			—
Decreases for positions taken in current year		(615	)		—			—
Increases for positions taken in prior years		101			646			3,571
Decreases for positions taken in prior years		—			(696	)		(184	)
Increases for positions taken in the current year		—			1,012			1,549
Unrecognized tax benefits, end of year	$	2,313		$	6,207		$	5,245

The Company does not believe it is reasonably possible that the total amounts of unrecognized tax benefits will change in the following twelve months; however, actual results could differ from those currently expected. Of the balance of unrecognized tax benefits, $2.4 million, which includes interest, would affect the Company’s effective tax rate if recognized at some point in the future.

The Company recognizes interest and penalties related to uncertain tax positions in Income tax expense. As of December 31, 2014 and 2013, the Company has approximately $0.1 million and $0.3 million, respectively, of accrued interest related to uncertain tax positions. Total interest for uncertain tax positions decreased by approximately $0.1 million in 2014, and increased by approximately $0.1 million in 2013 and 2012.

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Retirement Plans

12 Months Ended

Dec. 31, 2014

Compensation and Retirement Disclosure [Abstract]

Retirement Plans

10. RETIREMENT PLANS:

Defined Contribution Plan

The Company has a defined contribution retirement plan that covers substantially all of its employees and provides for a Company match of up to 50% of the first 6% of employee contributions to the plan, subject to certain limitations. The defined contribution retirement plan offers 25 investment options.

Defined Benefit Plans

The Company has two noncontributory defined benefit plans. Effective 2001, both plans were frozen, and participants were fully vested in their accrued benefits as of the date each plan was frozen. No additional participants can be added to the plans and no additional service can be earned by participants subsequent to the date the plans were frozen. The funding policy for both of these plans is based on current plan costs plus amortization of the unfunded plan liability. All current employees covered by these plans are now covered by the defined contribution retirement plan.

As of December 31, 2014, the Company had recorded, in accordance with the actuarial valuation, an accrued pension liability of $2.1 million and an unrecognized actuarial loss, net of tax, of $1.9 million in accumulated other comprehensive loss. As of December 31, 2013 the Company had recorded, in accordance with the actuarial valuation, an accrued pension liability of $1.2 million and an unrecognized actuarial loss, net of tax, of $1.3 million in accumulated other comprehensive loss. Additionally, as of December 31, 2014 and 2013, the projected and accumulated benefit obligation was $6.9 million and $5.8 million, respectively, and the fair value of plan assets was $4.8 million and $4.6 million, respectively. The increase in pension liability at December 31, 2014 is due to the adoption of the RP-2014 mortality tables by both plans.

The net periodic benefit cost was $0.2 million for the year ended December 31, 2014, $0.4 million for the year ended December 31, 2013, and $0.4 million for the year ended December 31, 2012. The weighted average discount rates used to measure the projected benefit obligation were 3.54% and 4.40% as of December 31, 2014 and 2013, respectively.

The plan assets are invested in growth mutual funds, consisting of a mix of debt and equity securities, which are categorized as Level 2 under the fair value hierarchy. The expected weighted average long-term rate of return on plan assets was 7.5% as of December 31, 2014 and 2013.

Non-qualified Retirement Savings Plan

The Company has a deferred compensation plan that covers officers and selected highly compensated employees. The deferred compensation plan generally matches up to 50% of the first $10,000 of officer contributions to the plan and the first $5,000 of other selected highly compensated employee contributions, subject to certain limitations. It also provides officers with a Company funded component with a retirement target benefit. The retirement target benefit amount is an actuarially estimated amount necessary to provide 35% of final base pay after a 35-year career with the Company or 1% of final base pay per year of service. The actual benefit, however, assumes an investment growth at 8% per year. Should the investment growth be greater than 8%, the benefit will be more, but if it is less than 8%, the amount will be less and the Company does not make up any deficiency.

Total expense for all retirement plans in 2014, 2013 and 2012 was $1.8 million, $1.8 million and $1.7 million, respectively.

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Related Party transactions - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Eagle Asset Management, Inc. [Member] | Minimum [Member]
Related Party Transaction [Line Items]
Company's shares owned by related party	10.00%
Raymond James & Associates [Member]
Related Party Transaction [Line Items]
Related party transaction amount	1.2

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Line of Credit and Long Term Debt

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Line of Credit and Long Term Debt

6. LINE OF CREDIT AND LONG-TERM DEBT:

Line of Credit

At December 31, 2014, the Company had $45.6 million of borrowings on its Credit Agreement. The Credit Agreement allows the Company to borrow up to $165 million, subject to compliance with financial covenants. At December 31, 2014, the Company had $61.7 million available to borrow in addition to its then-outstanding borrowings under the Credit Agreement while remaining in compliance with the Company’s financial covenants.

Under the Credit Agreement, the Company’s borrowings bear interest at LIBOR plus 1.75% to 2.75%, or the lending institution’s prime rate plus 0.75% to 1.75%. The Company was able to borrow at LIBOR plus 2.0% at December 31, 2014. The Credit Agreement bears interest at a weighted average rate of 2.43% at December 31, 2014.

At December 31, 2013, the Company had $87.9 million of borrowings on its Credit Agreement. The Company was able to borrow at LIBOR plus 2.0% at December 31, 2013. The Credit Agreement bore interest at a weighted average rate of 2.69% at December 31, 2013.

The Credit Agreement expires on October 24, 2017. The Company expects to extend, renew, or replace its line of credit borrowings, to the extent required by working capital or other borrowing needs. Therefore, borrowings on the line of credit are classified as noncurrent as of December 31, 2014 and 2013. Borrowings under the Credit Agreement are collateralized by substantially all of our personal property.

Long-Term Debt

At December 31, 2013, the Company had remaining principal on Term Notes of $6.4 million. The Term Notes originated in 2008 to 2009, bore interest at 9.07% to 10.50%, and were collateralized by accounts receivable, inventory, and certain equipment. As of June 30, 2014, the Company had paid all of the principal outstanding on its Term Notes.

Interest expense for continuing operations from Line of Credit borrowings, Term Notes, and capital leases was $2.3 million, net of amounts capitalized of $0.2 million in 2014, $3.6 million, net of amounts capitalized of $0.4 million in 2013, and $5.2 million, net of amounts capitalized of $0.2 million in 2012.

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Fair Value Measurements - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term debt		$ 6,300,000
Carrying value of long-term debt		6,400,000
Non-recurring fair value measurement impairment charges		300,000	0
Impairment of goodwill	16,066,000
Impairment of long lived asset		27,500,000
Tubular Products [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of goodwill	16,066,000	0	0
Permalok Corporation [Member] | Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration fair value estimate of liability	$ 2,700,000	$ 4,400,000

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Property and Equipment

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property and Equipment

4. PROPERTY AND EQUIPMENT:

Property and equipment consists of the following (in thousands):

	December 31,
	2014			2013
Land and improvements	$	23,689		$	24,240
Buildings		42,368			42,763
Machinery and equipment		140,578			136,581
Equipment under capital lease		6,001			14,196
Construction in progress		4,183			14,115
		216,819			231,895
Less accumulated depreciation and amortization		(84,224	)		(88,834	)
Property and equipment, net	$	132,595		$	143,061

Depreciation expense, which includes amortization of capital lease assets, was $13.6 million, $13.3 million, and $16.2 million for the years ended December 31, 2014, 2013, and 2012, respectively. Accumulated amortization associated with property and equipment under capital leases was $4.2 million and $4.9 million at December 31, 2014 and 2013, respectively.

Due to the impairment of its Tubular Products Group goodwill (see Note 5, “Goodwill and Intangible Assets”), the Company determined that an impairment triggering event as defined in ASC 360-10 had occurred for the asset groups included within the segment. The Company performed a recoverability test for each asset group, in which the carrying value of the asset group was compared against associated undiscounted future cash flows. This analysis determined that the carrying values of the asset groups were recoverable at December 31, 2014.

In conjunction with the preparation of its financial statements for the year ended December 31, 2013, the Company determined that an impairment triggering event as defined in ASC 360-10 had occurred for the assets located at its Bossier City, Louisiana facility due to increased competition in the OCTG market, pricing pressures from imported pipe, and growing inventory balances. This facility was included within our Tubular Products Group. The Company performed a recoverability test in which the carrying values of the asset groups were compared against the probability weighted undiscounted future cash flows of various future scenarios using Company-specific assumptions. The analysis determined that the carrying value of the asset group was not recoverable as the undiscounted cash flows were less than the carrying value of the asset group. The Company then compared the carrying value to the fair market value of the asset group. Management determined fair value using third-party appraisals, as discussed in Note 8. This analysis resulted in an impairment charge of $27.5 million, which is included in discontinued operations for 2013 as the related assets were sold as part of the sale of the OCTG business in March 2014.

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Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

5. GOODWILL AND INTANGIBLE ASSETS

Goodwill represents the excess of purchase price over the assigned fair values of the assets and liabilities assumed in conjunction with an acquisition. As discussed in Note 1, goodwill is reviewed for impairment annually at December 31 or whenever events occur or circumstances change that indicates goodwill may be impaired.

In evaluating goodwill, the Company looks at the long-term prospects for the reporting unit and recognizes that current performance may not be the best indicator of future prospects or value, which requires management judgment. The income approach is based upon projected future after-tax cash flows discounted to present value using factors that consider the timing and risk associated with the future after-tax cash flows. The market approach is based upon historical and/or forward-looking measures using multiples of revenue or EBITDA. The Company utilizes a weighted average of the income and market approaches, with a heavier weighting on the income approach because of the relatively limited number of comparable entities for which relevant multiples are available. If the carrying value of the reporting unit exceeds its calculated enterprise value, then the Company continues to assess the fair value of individual assets and liabilities, other than goodwill. The difference between the reporting unit enterprise value and the fair value of its identifiable net assets is the implied fair value of the reporting unit’s goodwill. A goodwill impairment loss is recorded for the difference between the implied fair value and its carrying value.

Goodwill related to the Company’s Tubular Products Group of $16.1 million was quantitatively evaluated with consideration of the income and market approaches as applicable. Due to negative impacts on our Tubular Products business as a result of the worldwide turmoil in crude oil markets, which became significant in the fourth quarter of 2014, we concluded that there was no implied fair value of the Tubular Products Group goodwill and that it should be completely written off as of December 31, 2014.

Goodwill related to the Company’s Water Transmission Group of $5.3 million was quantitatively evaluated with consideration of the income and market approaches as applicable. We concluded that Water Transmission Group goodwill was not impaired as of December 31, 2014.

Goodwill assigned to the Company’s Water Transmission and Tubular Products Groups is as follows (in thousands):

	Water Transmission		Tubular Products			Total
Goodwill balance, December 31, 2012	$	—	$	20,478		$	20,478
Additions		5,282		—			5,282
Goodwill balance, December 31, 2013		5,282		20,478			25,760
Adjustment for the sale of OCTG business		—		(4,412	)		(4,412	)
Fourth quarter impairment		—		(16,066	)		(16,066	)
Goodwill balance, December 31, 2014	$	5,282	$	—		$	5,282

The Company had allocated $4.4 million of goodwill to the two OCTG plants disposed in March 2014, and recorded the related write-off of that goodwill as part of the loss on sale of business in the Company’s consolidated statement of operations.

Intangible Assets

Intangible assets consist of the following as of December 31, 2014 (in thousands):

	Gross Carrying Amount		Accumulated Amortization			Intangible Assets, Net		Remaining Weighted-Average Amortization Period (in years)
Customer relationships	$	1,378	$	(138	)	$	1,240		9.0
Patents		1,162		(232	)		930		4.0
Trade names and trademarks		1,132		(75	)		1,057		14.0
Other (1)		295		(77	)		218		2.9
Total	$	3,967	$	(522	)	$	3,445		8.8

(1) Other intangibles consist of favorable lease contracts and non-compete agreements

The Company recorded $0.5 million amortization expense in 2014 and zero amortization in 2013 and 2012. The estimated amortization expense for the next five fiscal years is as follows (in thousands):

2015		523
2016		523
2017		495
2018		459
2019		213
Thereafter		1,232
	$	3,445

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Leases

12 Months Ended

Dec. 31, 2014

Leases [Abstract]

Leases

7. LEASES:

Capital Leases

The Company leases certain equipment used in the manufacturing process. The future minimum payments under the Company’s capital leases are as follows (in thousands):

2015	$	2,283
2016		169
2017		68
2018		—
2019		—
Thereafter		—
Total minimum lease payments		2,520
Amount representing interest		125
Present value of minimum lease payments with average interest rates of 9.66%		2,395
Current portion of capital lease obligation		2,170
Capital lease obligation, less current portion	$	225

We had a total of $2.4 million in capital lease obligations outstanding at December 31, 2014. The weighted average interest rate on all of the Company’s capital leases is 9.66%. The Company’s capital leases are for certain equipment used in the manufacturing process. Interest expense on discontinued operations was $0.1 million in 2014, $0.3 million in 2013 and $0.4 million in 2012, which was related to a capital lease at our former Bossier, Louisiana facility.

Operating Leases

The Company has entered into various equipment and property leases with terms of ten years or less. Total rental expense from continuing operations for 2014, 2013, and 2012 was $3.2 million, $2.8 million, and $2.9 million, respectively. Certain of the Company’s operating lease agreements include renewals and/or purchase options set to expire at various dates. Future minimum payments as of December 31, 2014 for operating leases with initial or remaining terms in excess of one year are (in thousands):

2015	$	2,557
2016		2,451
2017		2,191
2018		1,067
2019		651
Thereafter		2,491
	$	11,408

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Share-Based Compensation Plans - Summary of Share-Based Compensation Expense (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense	$ 2,946	$ 3,060	$ 3,048
Cost of Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense	337	662	432
Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense	$ 2,609	$ 2,398	$ 2,616

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Quarterly Data - Summary of Quarterly Financial Data (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Data [Line Items]
Net sales	$ 102,158	$ 116,505	$ 101,988	$ 82,647	$ 85,641	$ 78,527	$ 87,942	$ 107,335	$ 403,298	$ 359,445	$ 388,902
Gross profit	9,125	15,820	11,317	4,314	10,853	11,254	15,210	22,919	40,576	60,236	59,108
Operating income (loss)	(13,410)	9,331	5,399	(1,126)	5,679	5,698	9,269	16,889	194	37,535	31,286
Net income (loss)	(13,996)	5,021	3,192	(12,104)	(17,006)	1,016	5,561	9,506	(17,887)	(923)	16,244
Basic earnings (loss) per share
Continuing operations	$ (1.47)	$ 0.62	$ 0.34	$ (0.13)	$ 0.26	$ 0.29	$ 0.59	$ 1.16	$ (0.65)	$ 2.29	$ 1.87
Discontinued operations		$ (0.09)		$ (1.14)	$ (2.06)	$ (0.18)		$ (0.15)	$ (1.23)	$ (2.39)	$ (0.14)
Total	$ (1.47)	$ 0.53	$ 0.34	$ (1.27)	$ (1.80)	$ 0.11	$ 0.59	$ 1.01	$ (1.88)	$ (0.10)	$ 1.73
Diluted earnings (loss) per share
Continuing operations	$ (1.47)	$ 0.61	$ 0.33	$ (0.13)	$ 0.25	$ 0.29	$ 0.59	$ 1.16	$ (0.65)	$ 2.27	$ 1.85
Discontinued operations		$ (0.09)		$ (1.14)	$ (2.03)	$ (0.18)		$ (0.16)	$ (1.23)	$ (2.37)	$ (0.13)
Total	$ (1.47)	$ 0.52	$ 0.33	$ (1.27)	$ (1.78)	$ 0.11	$ 0.59	$ 1.00	$ (1.88)	$ (0.10)	$ 1.72
Operating Segments [Member]
Quarterly Financial Data [Line Items]
Operating income (loss)									14,813	52,286	48,339
Corporate [Member]
Quarterly Financial Data [Line Items]
Operating income (loss)	(4,000)	(3,943)	(3,555)	(3,121)	(3,309)	(3,559)	(4,004)	(3,879)	(14,619)	(14,751)	(17,053)
Water Transmission [Member] | Operating Segments [Member]
Quarterly Financial Data [Line Items]
Net sales	56,484	76,857	62,205	42,999	42,831	46,835	58,148	78,613	238,545	226,427	269,203
Gross profit	9,883	16,559	11,491	1,668	7,026	7,932	12,125	19,870	39,601	46,953	45,051
Operating income (loss)	7,817	14,429	9,543	(299)	5,505	6,306	10,499	18,033	31,490	40,343	36,278
Tubular Products [Member] | Operating Segments [Member]
Quarterly Financial Data [Line Items]
Net sales	45,674	39,648	39,783	39,648	42,810	31,692	29,794	28,722	164,753	133,018	119,699
Gross profit	(758)	(739)	(174)	2,646	3,827	3,322	3,085	3,049	975	13,283	14,057
Operating income (loss)	$ (17,227)	$ (1,155)	$ (589)	$ 2,294	$ 3,483	$ 2,951	$ 2,774	$ 2,735	$ (16,677)	$ 11,943	$ 12,061

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Share-Based Compensation Plans - Summary of Information about Stock Options Outstanding (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number of Options	38,000	40,000	47,000	71,597
Options Outstanding, Weighted Average Remaining Contractual Life	3 years 8 months 5 days
Options Outstanding, Weighted Average Exercise Price Per Share	$ 26.05	$ 25.44	$ 23.19	$ 21.26
Options Exercisable, Number of Options	38,000
Options Exercisable, Weighted Average Exercise Price Per Share	$ 26.05
Range One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Per Share	$ 22.07
Options Outstanding, Number of Options	4,000
Options Outstanding, Weighted Average Remaining Contractual Life	4 months 10 days
Options Outstanding, Weighted Average Exercise Price Per Share	$ 22.07
Options Exercisable, Number of Options	4,000
Options Exercisable, Weighted Average Exercise Price Per Share	$ 22.07
Range Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Per Share	$ 24.15
Options Outstanding, Number of Options	24,000
Options Outstanding, Weighted Average Remaining Contractual Life	5 years 3 months
Options Outstanding, Weighted Average Exercise Price Per Share	$ 24.15
Options Exercisable, Number of Options	24,000
Options Exercisable, Weighted Average Exercise Price Per Share	$ 24.15
Range Three [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Per Share	$ 28.31
Options Outstanding, Number of Options	4,000
Options Outstanding, Weighted Average Remaining Contractual Life	1 year 1 month 28 days
Options Outstanding, Weighted Average Exercise Price Per Share	$ 28.31
Options Exercisable, Number of Options	4,000
Options Exercisable, Weighted Average Exercise Price Per Share	$ 28.31
Range Four [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Per Share	$ 34.77
Options Outstanding, Number of Options	6,000
Options Outstanding, Weighted Average Remaining Contractual Life	1 year 3 months 11 days
Options Outstanding, Weighted Average Exercise Price Per Share	$ 34.77
Options Exercisable, Number of Options	6,000
Options Exercisable, Weighted Average Exercise Price Per Share	$ 34.77

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Share-Based Compensation Plans - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014 OptionPlan	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of inactive stock option plan	1
Number of active stock incentive plan	1
Maximum duration over which awards become exercisable under the plan	60 months
Termination date of the option from date of grant, in years	10 years
Number of common stock shares available for future issuance	643,393
Total intrinsic value of options exercised	$ 43,000	$ 100,000	$ 100,000
Number of options granted	0	0	0
Minimum performance awards issued multiplier	0.00%
Maximum performance awards issued multiplier	200.00%
Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards granted to non-employee directors	9,150	4,912	4,807
Directors [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair market value of stock awards	$ 36.00	$ 27.49	$ 23.40
Directors [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair market value of stock awards	$ 36.41
Restricted Stock Units and Performance Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum duration over which awards become exercisable under the plan	3 years
Unrecognized compensation expense	4,100,000
Expected weighted average period of compensation expense to be recognized	1 year 8 months 12 days
Fair value of RSUs and PSAs vested	$ 3,500,000	$ 2,100,000	$ 600,000
PSAs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum duration over which awards become exercisable under the plan	3 years
PSAs at target level of performance included in unvested balance	185,000
PSAs [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum duration over which awards become exercisable under the plan	2 years
PSAs [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum duration over which awards become exercisable under the plan	3 years

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Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Goodwill assigned to the Company’s Water Transmission and Tubular Products Groups is as follows (in thousands):

	Water Transmission		Tubular Products			Total
Goodwill balance, December 31, 2012	$	—	$	20,478		$	20,478
Additions		5,282		—			5,282
Goodwill balance, December 31, 2013		5,282		20,478			25,760
Adjustment for the sale of OCTG business		—		(4,412	)		(4,412	)
Fourth quarter impairment		—		(16,066	)		(16,066	)
Goodwill balance, December 31, 2014	$	5,282	$	—		$	5,282

Summary of Intangible Assets

Intangible assets consist of the following as of December 31, 2014 (in thousands):

	Gross Carrying Amount		Accumulated Amortization			Intangible Assets, Net		Remaining Weighted-Average Amortization Period (in years)
Customer relationships	$	1,378	$	(138	)	$	1,240		9.0
Patents		1,162		(232	)		930		4.0
Trade names and trademarks		1,132		(75	)		1,057		14.0
Other (1)		295		(77	)		218		2.9
Total	$	3,967	$	(522	)	$	3,445		8.8

(1) Other intangibles consist of favorable lease contracts and non-compete agreements

Summary of Estimated Amortization Expense

The estimated amortization expense for the next five fiscal years is as follows (in thousands):

2015		523
2016		523
2017		495
2018		459
2019		213
Thereafter		1,232
	$	3,445

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Goodwill and Intangible Assets - Schedule of Goodwill (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 25,760	$ 20,478
Adjustment for the sale of OCTG business	(4,412)
Additions		5,282
Fourth quarter impairment	(16,066)
Goodwill, Ending Balance	5,282	25,760
Water Transmission [Member]
Goodwill [Line Items]
Goodwill, Ending Balance	5,300
Water Transmission [Member] | Operating Segments [Member]
Goodwill [Line Items]
Additions		5,282
Goodwill, Ending Balance	5,282	5,282
Tubular Products [Member]
Goodwill [Line Items]
Fourth quarter impairment	(16,066)	0	0
Goodwill, Ending Balance	16,100
Tubular Products [Member] | Operating Segments [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	20,478
Adjustment for the sale of OCTG business	(4,412)
Fourth quarter impairment	(16,066)
Goodwill, Ending Balance			$ 20,478

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Shareholder Rights Plan

12 Months Ended

Dec. 31, 2014

Text Block [Abstract]

Shareholder Rights Plan

12. SHAREHOLDER RIGHTS PLAN:

In June 1999, the Board of Directors adopted a Shareholder Rights Plan (the “Plan”) designed to ensure fair and equal treatment for all shareholders in the event of a proposed acquisition of the Company by enhancing the ability of the Board of Directors to negotiate more effectively with a prospective acquirer, and reserved 150,000 shares of Series A Junior Participating Preferred Stock (“Preferred Stock”) for purposes of the Plan. In connection with the adoption of the Plan, the Board of Directors declared a dividend distribution of one non-detachable preferred stock purchase right (a “Right”) per share of common stock, payable to shareholders of record on July 9, 2000. Each Right represents the right to purchase one one-hundredth of a share of Preferred Stock at a price of $83.00, subject to adjustment. The Rights will be exercisable only if a person or group acquires, or commences a tender offer to acquire, 15% or more of the Company’s outstanding shares of common stock. Subject to the terms of the Plan and upon the occurrence of certain events, each Right would entitle the holder to purchase common stock of the Company, or of an acquiring company in certain circumstances, having a market value equal to two times the exercise price of the Right. The Company may redeem the Rights at a price of $0.01 per Right under certain circumstances.

On June 18, 2009, the Company and Computershare (“Rights Agent”) entered into an Amended and Restated Rights Agreement (the “Amended and Restated Rights Agreement”). The Amended and Restated Rights Agreement amended and restated the Rights Agreement dated as of June 28, 1999 between the Company and ChaseMellon Shareholder Services, L.L.C. (predecessor to the Rights Agent). The Amended and Restated Rights Agreement extended the final expiration date of the Rights from June 28, 2009 to June 28, 2019. The Amended and Restated Rights Agreement also reflected certain changes in the rights and obligations of the Rights Agent and certain changes in procedural requirements under the Amended and Restated Rights Agreement.

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Related Party Transaction

12 Months Ended

Dec. 31, 2014

Related Party Transactions [Abstract]

Related Party Transaction

17. RELATED PARTY TRANSACTION

During 2014, the Company paid $1.2 million to Raymond James & Associates, an affiliate of Eagle Asset Management, for investment banking services related to the Company’s sale of its former OCTG business. Eagle Asset Management is a substantial stockholder of the Company, as it owns more than 10 percent of the Company’s common stock.

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Property and Equipment - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Abstract]
Depreciation expense includes amortization of capital lease assets	$ 13,606,000	$ 13,272,000	$ 16,240,000
Accumulated amortization of property and equipment under capital leases	4,200,000	4,900,000
Asset impairment charge		$ 27,500,000

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Quarterly Data (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Financial Data

Summarized quarterly financial data for 2014 and 2013 is as follows (dollars in thousands, except per share).

	First Quarter			Second Quarter			Third Quarter			Fourth Quarter			Total
For the year ended December 31, 2014
Net sales:
Water transmission	$	42,999		$	62,205		$	76,857		$	56,484		$	238,545
Tubular products		39,648			39,783			39,648			45,674			164,753
Total	$	82,647		$	101,988		$	116,505		$	102,158		$	403,298
Gross profit (loss):
Water transmission	$	1,668		$	11,491		$	16,559		$	9,883		$	39,601
Tubular products		2,646			(174	)		(739	)		(758	)		975
Total	$	4,314		$	11,317		$	15,820		$	9,125		$	40,576
Operating income (loss):
Water transmission	$	(299	)	$	9,543		$	14,429		$	7,817		$	31,490
Tubular products		2,294			(589	)		(1,155	)		(17,227	)		(16,677	)
Corporate		(3,121	)		(3,555	)		(3,943	)		(4,000	)		(14,619	)
Total	$	(1,126	)	$	5,399		$	9,331		$	(13,410	)	$	194
Net income (loss)	$	(12,104	)	$	3,192		$	5,021		$	(13,996	)	$	(17,887	)
Basic Earnings (loss) per share:
Continuing Operations	$	(0.13	)	$	0.34		$	0.62		$	(1.47	)	$	(0.65	)
Discontinued Operations		(1.14	)		—			(0.09	)		—			(1.23	)
Total	$	(1.27	)	$	0.34		$	0.53		$	(1.47	)	$	(1.88	)
Diluted Earnings (loss) per share:
Continuing Operations	$	(0.13	)	$	0.33		$	0.61		$	(1.47	)	$	(0.65	)
Discontinued Operations		(1.14	)		—			(0.09	)		—			(1.23	)
Total	$	(1.27	)	$	0.33		$	0.52		$	(1.47	)	$	(1.88	)

	First Quarter			Second Quarter			Third Quarter			Fourth Quarter			Total
For the year ended December 31, 2013
Net sales:
Water transmission	$	78,613		$	58,148		$	46,835		$	42,831		$	226,427
Tubular products		28,722			29,794			31,692			42,810			133,018
Total	$	107,335		$	87,942		$	78,527		$	85,641		$	359,445
Gross profit:
Water transmission	$	19,870		$	12,125		$	7,932		$	7,026		$	46,953
Tubular products		3,049			3,085			3,322			3,827			13,283
Total	$	22,919		$	15,210		$	11,254		$	10,853		$	60,236
Operating income (loss):
Water transmission	$	18,033		$	10,499		$	6,306		$	5,505		$	40,343
Tubular products		2,735			2,774			2,951			3,483			11,943
Corporate		(3,879	)		(4,004	)		(3,559	)		(3,309	)		(14,751	)
Total	$	16,889		$	9,269		$	5,698		$	5,679		$	37,535
Net income	$	9,506		$	5,561		$	1,016		$	(17,006	)	$	(923	)
Basic Earnings (loss) per share:
Continuing Operations	$	1.16		$	0.59		$	0.29		$	0.26		$	2.29
Discontinued Operations		(0.15	)		—			(0.18	)		(2.06	)	$	(2.39	)
Total	$	1.01		$	0.59		$	0.11		$	(1.80	)	$	(0.10	)
Diluted Earnings (loss) per share:
Continuing Operations	$	1.16		$	0.59		$	0.29		$	0.25		$	2.27
Discontinued Operations		(0.16	)		—			(0.18	)		(2.03	)		(2.37	)
Total	$	1.00		$	0.59		$	0.11		$	(1.78	)	$	(0.10	)

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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Trade and other receivables, allowance for doubtful accounts	$ 755	$ 685
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	15,000,000	15,000,000
Common stock, shares issued	9,520,067	9,449,299
Common stock, shares outstanding	9,520,067	9,449,299

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Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:

The Company operates in two business segments, Water Transmission and Tubular Products. The Water Transmission segment primarily produces steel pipeline systems for use in drinking water infrastructure, and has eight manufacturing facilities, located in Portland, Oregon; Denver, Colorado; Adelanto, California; Parkersburg, West Virginia; Saginaw, Texas; St. Louis, Missouri; Salt Lake City, Utah and Monterrey, Mexico. The Tubular Products segment primarily produces steel line pipe products for energy applications, and has a manufacturing facility located in Atchison, Kansas.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company bases its estimates on historical experience and on various assumptions that are believed to be reasonable under the circumstances at that time. On an on-going basis, the Company evaluates all of its estimates, including those related to revenue recognition, allowance for doubtful accounts, goodwill, long-lived assets, including depreciation and amortization, inventories, income taxes, and litigation and other contingencies. Actual results could differ from those estimates under different assumptions or conditions.

Basis of Consolidation and Presentation

The consolidated financial statements include the accounts of Northwest Pipe Company and its subsidiaries over which the Company exercises control as of the financial statement date. Intercompany accounts and transactions have been eliminated.

On March 30, 2014, the Company completed the sale of substantially all of the assets and liabilities associated with its oil country tubular goods (“OCTG”) business, as discussed in more detail below. The Company’s results of operations for its disposed OCTG business have been presented as discontinued operations for all periods presented within the consolidated statements of operations.

Certain amounts from the prior year financial statements have been reclassified in order to conform to the current year presentation.

Lucid Energy Inc., over which the Company exercises significant influence but does not control, is accounted for under the cost method of accounting. Lucid Energy is a clean energy company based in Portland, Oregon. The carrying value of our investment is $0 at both December 31, 2014 and 2013 due to a history of net losses by Lucid Energy.

Business Acquisitions and Disposals

The Company allocates the fair value of purchase consideration to the tangible assets acquired, liabilities assumed and intangible assets acquired based on their estimated fair values. The excess of the fair value of purchase consideration over the fair values of these identifiable assets and liabilities is recorded as goodwill. Such valuations require management to make significant estimates and assumptions, especially with respect to intangible assets. Contingent consideration is calculated and recorded at the date of the acquisition. During the measurement period, which does not exceed one year from the acquisition date, the Company may record adjustments to the assets acquired and liabilities assumed as a result of information received regarding the valuation of assets and liabilities after the acquisition date, with the corresponding offset to goodwill. Upon the conclusion of the measurement period, any subsequent adjustments are recorded to earnings.

Disposal of OCTG Business

On March 30, 2014 the Company completed the sale of substantially all of the assets and liabilities associated with its OCTG business, which was conducted by the Company at its manufacturing facilities in Bossier City, Louisiana and Houston, Texas, excluding the real property located in Houston, Texas. These facilities were previously included within the Company’s Tubular Products Group. Total consideration of $42.7 million was paid by the buyer, resulting in a loss on sale of $13.5 million. The calculation of the loss on sale included a write down of $4.4 million of goodwill. Of the proceeds received, $4.3 million was placed in escrow to secure the Company’s indemnification obligations under the purchase agreement, $5.0 million was used to repay capital leases related to and secured by certain assets at the Bossier City, Louisiana manufacturing facility, $1.8 million was used to pay for transaction costs and $1.8 million was used to pay a net working capital adjustment made in September 2014, resulting in net proceeds of $29.8 million.

The table below presents the components of the balance sheet accounts associated with the OCTG business as of December 31, 2013 (in thousands). All sold assets and liabilities were transferred to the buyer as of March 30, 2014.

	December 31, 2013
Assets:
Trade and other receivables, net	$	11,673
Inventories		44,668
Prepaid expenses and other		206
Total current assets		56,547
Property and equipment, net		11,509
Total assets		68,056
Liabilities:
Current portion of capital lease obligations		1,289
Accounts payable		3,013
Accrued liabilities		1,466
Deferred revenue		4,505
Total current liabilities		10,273
Capital lease obligations, less current portion		4,075
Total liabilities	$	14,348

The table below presents the operating results for the Company’s discontinued operations (in thousands). These operating results for 2014, 2013 and 2012 do not necessarily reflect what they would have been had the OCTG business not been classified as a discontinued operation.

	Year Ended December 31,
	2014			2013			2012
Net sales	$	22,225		$	116,111			135,601
Cost of sales		23,881			123,888			138,511
Gross loss		(1,656	)		(7,777	)		(2,910	)
Selling, general, and administrative		396			1,509			816
Impairment of fixed assets		—			27,500			—
Operating loss		(2,052	)		(36,786	)		(3,726	)
Loss on sale of business		(13,497	)		—			—
Interest income		—			47			13
Interest expense		(99	)		(344	)		(411	)
Loss before income taxes		(15,648	)		(37,083	)		(4,124	)
Income tax benefit		(3,934	)		(14,484	)		(2,867	)
Net loss	$	(11,714	)	$	(22,599	)	$	(1,257	)

Acquisition of Permalok Corporation

On December 30, 2013 the Company acquired 100% of the outstanding shares of capital stock of Permalok Corporation, a fabricator of steel piping utilizing the Permalok interlocking pipe joining system. Permalok’s rolled and welded steel pipe products provide an alternate joint solution which complements and expands the Company’s product offerings in the Water Transmission segment. Total consideration (net of cash received) of $15.7 million was paid to the owners of the business, resulting in the recording of $5.3 million of goodwill, none of which is expected to be deductible for tax purposes. The goodwill recorded is attributed to synergies expected from integrating operations of Permalok with the rest of the Company’s Water Transmission business. The goodwill is included within the Water Transmission Group for purposes of segment reporting. Contingent consideration of $2.7 million and $4.4 million was recorded in other long-term liabilities as of December 31, 2014 and December 31, 2013, which represents the probability weighted contingent payment as a percentage of high, mid, and low revenue projections for years 2014, 2015 and 2016. There were no payments on the contingent consideration obligation in 2015 for 2014 revenues.

Pro forma results of operations related to our acquisitions during the year ended December 31, 2013 have not been presented because they are not material to our Consolidated Statements of Operations, either individually or in the aggregate.

Cash and Cash Equivalents

Cash and cash equivalents consist of cash and short term highly liquid investments with remaining maturities of three months or less when purchased. At times, the Company will have outstanding checks in excess of related bank balances (a book overdraft). If this occurs, the amount of the book overdraft will be reclassified to accounts payable, and changes in the book overdraft will be reflected as a component of operating activities in the consolidated statement of cash flows. The Company had a book overdraft of $0.9 million at December 31, 2014. There was not a book overdraft at December 31, 2013.

Receivables and Allowance for Doubtful Accounts

Trade receivables are reported on the consolidated balance sheet net of any doubtful accounts. The Company maintains allowances for estimated losses resulting from the inability of its customers to make required payments or from contract disputes. The amounts of such allowances are based on Company history and management’s judgment. At least monthly, the Company reviews past due balances to identify the reasons for non-payment. The Company will write off a receivable account once the account is deemed uncollectible. The Company believes the reported allowances at December 31, 2014 and 2013 are adequate. If the customers’ financial conditions were to deteriorate resulting in their inability to make payments, or if contract disputes were to escalate, additional allowances may need to be recorded which would result in additional expenses being recorded for the period in which such determination was made.

Customer Prepayments

Contractual terms may require prepayment of a portion of a contract value by the customer in advance of completing the work. Advanced deposits are recorded in accrued liabilities and are offset by invoices as work is performed on the contract. There were no advanced deposits at either December 31, 2014, or December 31, 2013.

Inventories

Inventories are stated at the lower of cost or market. Raw material inventories of steel are stated at cost, either on a specific identification basis or on an average cost basis. All other raw material inventories, as well as supplies, are stated on an average cost basis. Finished goods are stated at cost using the first-in, first-out method of accounting.

Property and Equipment

Property and equipment is stated at cost. Maintenance and repairs are expensed as incurred, and costs of new equipment and buildings, as well as costs of expansions or refurbishment of existing equipment and buildings, including interest where applicable, are capitalized. Depreciation and amortization are determined by the units of production method for most equipment and by the straight-line method for the remaining assets based on the estimated useful lives of the related assets. Estimated useful lives by major classes of property and equipment are as follows: Land improvements (15–30 years); Buildings (20–40 years); Machinery and equipment (3–30 years). Depreciation expense calculated under the units of production method may be less than, equal to, or greater than depreciation expense calculated under the straight-line method due to variances in production levels. Upon disposal, costs and related accumulated depreciation of the assets are removed from the accounts and resulting gains or losses are reflected in operating expenses. The Company leases certain equipment under long-term capital leases, which are being amortized on a straight-line basis over the shorter of its useful life or the lease term.

The Company assesses impairment of property and equipment whenever changes in circumstances indicate that the carrying values of the asset or asset group(s) may not be recoverable. The asset group is the lowest level at which identifiable cash flows are largely independent of the cash flows of other groups of assets or liabilities. The recoverable value of long-lived asset group is determined by estimating future undiscounted cash flows using assumptions about the expected future operating performance of the Company.

In conjunction with the preparation of the financial statements for the year ended December 31, 2013, the Company determined that an impairment triggering event as defined in ASC 360-10 had occurred for the assets located at its Bossier City, Louisiana facility. See Note 4, “Property and Equipment” for further discussion of the property and equipment impairment recorded during 2013.

Goodwill and Intangible Assets

Goodwill represents the excess of purchase price over the assigned fair values of the net assets in connection with an acquisition. Goodwill is reviewed for impairment annually at December 31 or whenever events occur or circumstances change that indicates goodwill may be impaired. Goodwill is tested for impairment at the reporting unit level. A reporting unit is an operating segment or one level below an operating segment (also known as a component). Our reporting units are equivalent to our operating segments as the individual components meet the criteria for aggregation.

Intangible assets consist primarily of customer relationships, patents, and trade names and trademarks recorded as the result of acquisition activity. Intangible assets are amortized using the straight-line method over estimated useful lives ranging from 3 to 15 years.

See Note 5, “Goodwill and Intangible Assets” for further discussion of the Company’s goodwill and intangible asset balances.

Workers Compensation Insurance

The Company is self-insured, or maintains high deductible policies, for losses and liabilities associated with workers compensation claims. Losses are accrued based upon the Company’s estimates of the aggregate liability for claims incurred using historical experience and certain actuarial assumptions followed in the insurance industry.

Accrued Liabilities

The Company’s accrued liabilities include payroll related liabilities, reserves for health and workers’ compensation claims, property and sales tax payable, and other liabilities expected to be paid within one year of the balance sheet date. At both December 31, 2014 and 2013, accrued vacation payable of $2.2 million was included in accrued liabilities.

Pension Benefits

The Company has two defined benefit pension plans that have been frozen since 2001. The Company funds these plans to cover current plan costs plus amortization of the unfunded plan liabilities. To record these obligations, management uses estimates relating to investment returns, mortality, and discount rates. Management reviews all of these assumptions on an annual basis.

Derivative Instruments

The Company conducts business in foreign countries, and, from time to time, settles transactions in foreign currencies. The Company has established a program that utilizes foreign currency forward contracts to offset the risk associated with the effects of certain foreign currency exposures, typically arising from sales contracts denominated in Canadian currency. Foreign currency forward contracts are consistent with the Company’s strategy for financial risk management. The Company utilizes cash flow hedge accounting treatment for qualifying foreign currency forward contracts. Instruments that do not qualify for cash flow hedge accounting treatment are remeasured at fair value at each balance sheet date and resulting gains and losses are recognized in net income (loss).

Foreign Currency Transactions

Assets and liabilities subject to foreign currency fluctuations are translated into United States dollars at the period-end exchange rate, and revenue and expenses are translated at exchange rates representing an average for the period. Translation adjustments from designated hedges are included in accumulated other comprehensive loss as a separate component of stockholders’ equity. Gains or losses on all other foreign currency transactions are recognized in the consolidated statement of operations. The functional currency of the Company’s Mexican operations is the United States dollar.

Revenue Recognition

Revenue from construction contracts in the Company’s Water Transmission Group is recognized on the percentage-of-completion method. For a majority of contracts, revenue is measured by the costs incurred to date as a percentage of the estimated total costs of each contract (cost-to-cost method). For a small number of contracts, revenue is measured using units of delivery as progress is best estimated by the number of units delivered under the contract. Contract costs include all direct material and labor costs and those indirect costs related to contract performance, such as indirect labor, supplies, tools, repairs and depreciation. Selling, general and administrative costs are charged to expense as incurred. The cost of steel is recognized as a project cost when the steel is introduced into the manufacturing process. Estimated total costs of each contract are reviewed on a monthly basis by project management and operations personnel for all active projects. All cost revisions that result in the gross profit as a percent of sales increasing or decreasing by more than two percent are reviewed by senior management personnel.

The Company begins recognizing revenue on a project when persuasive evidence of an arrangement exists, recoverability is reasonably assured, and project costs are incurred. Costs may be incurred before the Company has persuasive evidence of an arrangement. In those cases, if recoverability from that arrangement is probable, the project costs are deferred and revenue recognition is delayed.

Changes in job performance, job conditions and estimated profitability, including those arising from contract change orders, contract penalty provisions, foreign currency exchange rate movements, changes in raw materials costs, and final contract settlements may result in revisions to estimates of revenue, costs and income and are recognized in the period in which the revisions are determined. Provisions for losses on uncompleted contracts are made in the period such losses are known.

Revenue from the Company’s Tubular Products Group is recognized when all four of the following criteria have been satisfied: persuasive evidence of an arrangement exists, the price is fixed or determinable, delivery has occurred, and collectability is reasonably assured. Deferred revenue is recorded when the manufacturing process is complete and customers are invoiced prior to physical delivery of the product.

Income Taxes

Income taxes are recorded using an asset and liability approach that requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in the Company’s financial statements or tax returns. Valuation allowances are established when necessary to reduce deferred income tax assets to the amount expected to be realized. The determination of the provision for income taxes requires significant judgment, the use of estimates and the interpretation and application of complex tax laws. The provision for income taxes primarily reflects a combination of income earned and taxed in the various United States federal and state and, to a lesser extent, foreign jurisdictions. Jurisdictional tax law changes, increases or decreases in permanent differences between book and tax items, accruals or adjustments of accruals for unrecognized tax benefits or valuation allowances, and the change in the mix of earnings from these taxing jurisdictions all affect the overall effective tax rate.

The Company records tax reserves for federal, state, local and international exposures relating to periods subject to audit. The development of reserves for these exposures requires judgments about tax issues, potential outcomes and timing, and is a subjective estimate. The Company assesses tax positions and records tax benefits for all years subject to examination based upon management’s evaluation of the facts, circumstances, and information available at the reporting dates. For those tax positions where it is more-likely-than-not that a tax benefit will be sustained, the largest amount of tax benefit with a greater than 50% likelihood of being realized upon settlement with a tax authority that has full knowledge of all relevant information has been recorded. For those tax positions where it is not more-likely-than-not that a tax benefit will be sustained, no tax benefit has been recognized in the financial statements.

Accumulated Other Comprehensive Loss

Accumulated other comprehensive loss includes unrealized gains and losses on derivative instruments related to the effective portion of cash flow hedges and changes in the funded status of the defined benefit pension plans, both net of the related income tax effect. For further information, refer to Note 15, “Accumulated Other Comprehensive Loss”.

Earnings (Loss) per Share

Earnings (loss) per basic and diluted weighted average common shares outstanding was calculated as follows for the years ended December 31 (in thousands, except per share data):

	2014			2013			2012
Income (loss) from continuing operations	$	(6,173	)	$	21,676		$	17,501
Loss from discontinued operations		(11,714	)		(22,599	)		(1,257	)
Net income (loss)	$	(17,887	)	$	(923	)	$	16,244
Basic weighted-average common shares outstanding		9,515			9,445			9,377
Effect of potentially dilutive common shares(1)		—			89			68
Diluted weighted-average common shares outstanding		9,515			9,534			9,445
Earnings (loss) per basic common share:
Continuing operations	$	(0.65	)	$	2.29		$	1.87
Discontinued operations		(1.23	)		(2.39	)		(0.14	)
Total	$	(1.88	)	$	(0.10	)	$	1.73
Earnings (loss) per diluted common share:
Continuing operations	$	(0.65	)	$	2.27		$	1.85
Discontinued operations		(1.23	)		(2.37	)		(0.13	)
Total	$	(1.88	)	$	(0.10	)	$	1.72
Antidilutive shares excluded from net earnings per diluted common share calculation		65			93			92

(1) Represents the effect of the assumed exercise of stock options and the vesting of restricted stock units and performance stock awards, based on the treasury stock method.

Concentrations of Credit Risk

Financial instruments, which potentially subject the Company to concentrations of credit risk, consist principally of trade receivables, derivative contracts, the escrow account related to the sale of the OCTG business, and deferred compensation plan assets. Trade receivables generally represent a large number of customers, including municipalities, manufacturers, distributors and contractors, dispersed across a wide geographic base. At December 31, 2014, one customer had a balance in excess of 10% of total accounts receivable. At December 31, 2013, two customers had a balance in excess of 10% of total accounts receivable. Derivative contracts are with a financial institution whose short-term investments are rated A-1 by Standard and Poor’s. The Company’s deferred compensation plan assets, also included in other assets, are invested in a diversified portfolio of stock and bond mutual funds.

Share-based Compensation

The Company recognizes the compensation cost of employee and director services received in exchange for awards of equity instruments based on the grant date estimated fair value of the awards. Share-based compensation cost is recognized over the period during which the employee or director is required to provide service in exchange for the award, and as forfeitures occur, the associated compensation cost recognized to date is reversed.

The Company estimates the fair value of Restricted Stock Units (“RSUs”) and Performance Stock Awards (“PSAs”) using the value of the Company’s stock on the date of grant, with the exception of market-based PSAs, for which a Monte Carlo simulation model is used. The Monte Carlo simulation model requires the use of subjective and complex assumptions including the price volatility of the underlying stock. The expected stock price volatility assumption was determined using the historical volatility of the Company’s and a comparator group of companies’ stock over the most recent historical period equivalent to the expected life. The Monte Carlo simulation model calculates many potential outcomes for an award and estimates fair value based on the most likely outcome.

See Note 11, “Share-based Compensation Plans” for further discussion of the Company’s share-based compensation.

Recent Accounting and Reporting Developments

Accounting Changes

In April 2014, the FASB issued ASU 2014-08, which changes the criteria for when the disposal of a component of an entity may be presented as discontinued operations. The guidance requires that the disposal be considered a strategic shift (such as the disposal of a major geographical area, a major line of business, a major equity method investment, or other major part of an entity) which will have a major effect on a reporting entity’s operating and financial results in order to be presented as discontinued operations. Disposals which qualify for discontinued operations presentation will require expanded disclosures. The Company adopted this guidance on January 1, 2015 for any future disposals qualifying for discontinued operations presentation.

In July 2013, the FASB issued ASU 2013-11, which clarified guidance on the presentation of unrecognized tax benefits. The guidance requires that an unrecognized tax benefit, or portion of an unrecognized tax benefit, be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward when such items exist in the same taxing jurisdiction. The Company adopted this guidance on January 1, 2014 as required, and the effect was not material.

Recent Accounting Standards

In August 2014, the FASB issued Accounting Standards Update (“ASU”) No. 2014-15, “Presentation of Financial Statements—Going Concern.” This standard requires management to evaluate for each annual and interim reporting period whether it is probable that the reporting entity will not be able to meet its obligations as they become due within one year after the date that the financial statements are issued. If the entity is in such a position, the standard provides for certain disclosures depending on whether or not the entity will be able to successfully mitigate its going concern status. This guidance is effective for annual periods ending after December 15, 2016 and interim periods within annual periods beginning after December 15, 2016. Early application is permitted. The Company does not expect a material impact to the Company’s financial condition, results of operations or cash flows from the adoption of this guidance.

In May 2014, the FASB issued Accounting Standards Update (“ASU”) No. 2014-09, “Revenue from Contracts with Customers,” which will replace most existing revenue recognition guidance in accordance with U.S. GAAP. The core principle of the ASU is that an entity should recognize revenue for the transfer of goods or services equal to the amount that it expects to be entitled to receive for those goods or services. The ASU requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments. The ASU will be effective for the Company beginning January 1, 2017, including interim periods in 2017, and allows for both retrospective and prospective methods of adoption. The Company is in the process of determining the method of adoption and assessing the impact of this ASU on its consolidated financial statements.

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Leases - Schedule of Future Minimum Lease Payments for Operating Leases (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Leases [Abstract]
2015	$ 2,557
2016	2,451
2017	2,191
2018	1,067
2019	651
Thereafter	2,491
Total	$ 11,408

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Segment Information - Segment Information Report of Statements of Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Net sales	$ 102,158	$ 116,505	$ 101,988	$ 82,647	$ 85,641	$ 78,527	$ 87,942	$ 107,335	$ 403,298	$ 359,445	$ 388,902
Gross profit from continuing operations	9,125	15,820	11,317	4,314	10,853	11,254	15,210	22,919	40,576	60,236	59,108
Operating income (loss) from continuing operations	(13,410)	9,331	5,399	(1,126)	5,679	5,698	9,269	16,889	194	37,535	31,286
Depreciation and amortization of property and equipment									14,146	13,299	16,267
Capital expenditures									14,289	28,447	16,789
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income (loss) from continuing operations									14,813	52,286	48,339
Depreciation and amortization of property and equipment									13,806	13,045	16,015
Capital expenditures									13,716	27,558	16,643
Corporate [Member]
Segment Reporting Information [Line Items]
Operating income (loss) from continuing operations	(4,000)	(3,943)	(3,555)	(3,121)	(3,309)	(3,559)	(4,004)	(3,879)	(14,619)	(14,751)	(17,053)
Depreciation and amortization of property and equipment									340	254	252
Capital expenditures									573	889	146
Reportable Geographical Components [Member] | United States [Member]
Segment Reporting Information [Line Items]
Net sales									383,344	308,345	332,859
Reportable Geographical Components [Member] | Non US [Member]
Segment Reporting Information [Line Items]
Net sales									19,954	51,100	56,043
Water Transmission [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	56,484	76,857	62,205	42,999	42,831	46,835	58,148	78,613	238,545	226,427	269,203
Gross profit from continuing operations	9,883	16,559	11,491	1,668	7,026	7,932	12,125	19,870	39,601	46,953	45,051
Operating income (loss) from continuing operations	7,817	14,429	9,543	(299)	5,505	6,306	10,499	18,033	31,490	40,343	36,278
Depreciation and amortization of property and equipment									8,716	7,082	10,474
Capital expenditures									6,190	13,204	6,830
Tubular Products [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	45,674	39,648	39,783	39,648	42,810	31,692	29,794	28,722	164,753	133,018	119,699
Gross profit from continuing operations	(758)	(739)	(174)	2,646	3,827	3,322	3,085	3,049	975	13,283	14,057
Operating income (loss) from continuing operations	(17,227)	(1,155)	(589)	2,294	3,483	2,951	2,774	2,735	(16,677)	11,943	12,061
Depreciation and amortization of property and equipment									5,090	5,963	5,541
Capital expenditures									$ 7,526	$ 14,354	$ 9,813

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Share-Based Compensation Plans - Summary of Status of Company's RSUs and PSAs (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
vesting period	60 months
Restricted Stock Units and Performance Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target level of RSUs and PSAs	100.00%
vesting period	3 years
PSAs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares vested for awards	13,161
vesting period	3 years
Actual payout percentage	143.00%

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Quarterly Data

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Quarterly Data

18. QUARTERLY DATA (UNAUDITED):

Summarized quarterly financial data for 2014 and 2013 is as follows (dollars in thousands, except per share).

	First Quarter			Second Quarter			Third Quarter			Fourth Quarter			Total
For the year ended December 31, 2014
Net sales:
Water transmission	$	42,999		$	62,205		$	76,857		$	56,484		$	238,545
Tubular products		39,648			39,783			39,648			45,674			164,753
Total	$	82,647		$	101,988		$	116,505		$	102,158		$	403,298
Gross profit (loss):
Water transmission	$	1,668		$	11,491		$	16,559		$	9,883		$	39,601
Tubular products		2,646			(174	)		(739	)		(758	)		975
Total	$	4,314		$	11,317		$	15,820		$	9,125		$	40,576
Operating income (loss):
Water transmission	$	(299	)	$	9,543		$	14,429		$	7,817		$	31,490
Tubular products		2,294			(589	)		(1,155	)		(17,227	)		(16,677	)
Corporate		(3,121	)		(3,555	)		(3,943	)		(4,000	)		(14,619	)
Total	$	(1,126	)	$	5,399		$	9,331		$	(13,410	)	$	194
Net income (loss)	$	(12,104	)	$	3,192		$	5,021		$	(13,996	)	$	(17,887	)
Basic Earnings (loss) per share:
Continuing Operations	$	(0.13	)	$	0.34		$	0.62		$	(1.47	)	$	(0.65	)
Discontinued Operations		(1.14	)		—			(0.09	)		—			(1.23	)
Total	$	(1.27	)	$	0.34		$	0.53		$	(1.47	)	$	(1.88	)
Diluted Earnings (loss) per share:
Continuing Operations	$	(0.13	)	$	0.33		$	0.61		$	(1.47	)	$	(0.65	)
Discontinued Operations		(1.14	)		—			(0.09	)		—			(1.23	)
Total	$	(1.27	)	$	0.33		$	0.52		$	(1.47	)	$	(1.88	)

	First Quarter			Second Quarter			Third Quarter			Fourth Quarter			Total
For the year ended December 31, 2013
Net sales:
Water transmission	$	78,613		$	58,148		$	46,835		$	42,831		$	226,427
Tubular products		28,722			29,794			31,692			42,810			133,018
Total	$	107,335		$	87,942		$	78,527		$	85,641		$	359,445
Gross profit:
Water transmission	$	19,870		$	12,125		$	7,932		$	7,026		$	46,953
Tubular products		3,049			3,085			3,322			3,827			13,283
Total	$	22,919		$	15,210		$	11,254		$	10,853		$	60,236
Operating income (loss):
Water transmission	$	18,033		$	10,499		$	6,306		$	5,505		$	40,343
Tubular products		2,735			2,774			2,951			3,483			11,943
Corporate		(3,879	)		(4,004	)		(3,559	)		(3,309	)		(14,751	)
Total	$	16,889		$	9,269		$	5,698		$	5,679		$	37,535
Net income	$	9,506		$	5,561		$	1,016		$	(17,006	)	$	(923	)
Basic Earnings (loss) per share:
Continuing Operations	$	1.16		$	0.59		$	0.29		$	0.26		$	2.29
Discontinued Operations		(0.15	)		—			(0.18	)		(2.06	)	$	(2.39	)
Total	$	1.01		$	0.59		$	0.11		$	(1.80	)	$	(0.10	)
Diluted Earnings (loss) per share:
Continuing Operations	$	1.16		$	0.59		$	0.29		$	0.25		$	2.27
Discontinued Operations		(0.16	)		—			(0.18	)		(2.03	)		(2.37	)
Total	$	1.00		$	0.59		$	0.11		$	(1.78	)	$	(0.10	)

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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Effective Income Tax Rate Reconciliation
Provision (benefit) at statutory rate of 35%	$ (532)	$ 11,921	$ 9,083
State provision, net of federal benefit	(96)	370	601
Federal and state tax credits	(91)	(525)	(379)
Domestic manufacturing deduction		(641)	(762)
Change in valuation allowance	9	954
Uncertain tax positions	5	(7)	(67)
Goodwill impairment (nondeductible)	5,623
Nondeductible expenses	207	345	247
Nontaxable adjustment to contingent consideration	(611)
Other	137	(59)	(335)
Total	$ 4,651	$ 12,358	$ 8,388
Effective tax rate	305.60%	36.30%	32.40%

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense for Continuing Operations

The components of income tax expense for continuing operations are as follows:

	Year Ended December 31,
	2014			2013			2012
	(in thousands)
Current:
Federal	$	4,336		$	9,097		$	8,409
State		334			690			278
Total current tax expense		4,670			9,787			8,687
Deferred:
Federal		305			2,631			(416	)
State		(324	)		(60	)		117
Total deferred tax expense (benefit)		(19	)		2,571			(299	)
	$	4,651		$	12,358		$	8,388

Schedule of Effective Income Tax Rate Reconciliation

The difference between the Company’s effective income tax rates and the statutory United States federal income tax rate of 35% is explained as follows:

	Year Ended December 31,
	2014			2013			2012
	(in thousands)
Provision (benefit) at statutory rate of 35%	$	(532	)	$	11,921		$	9,083
State provision, net of federal benefit		(96	)		370			601
Federal and state tax credits		(91	)		(525	)		(379	)
Domestic manufacturing deduction		—			(641	)		(762	)
Change in valuation allowance		9			954			—
Uncertain tax positions		5			(7	)		(67	)
Goodwill impairment (nondeductible)		5,623			—			—
Nondeductible expenses		207			345			247
Nontaxable adjustment to contingent consideration		(611	)		—			—
Other		137			(59	)		(335	)
	$	4,651		$	12,358		$	8,388
Effective tax rate		305.6	%		36.3	%		32.4	%

Schedule of Current and Noncurrent Deferred Tax Assets and Liabilities

The tax effect of temporary differences that give rise to significant portions of deferred tax assets and liabilities is presented below:

	December 31,
	2014			2013
	(in thousands)
Current deferred tax assets:
Costs and estimated earnings in excess of billings on uncompleted contracts, net	$	2,186		$	2,384
Accrued employee benefits		841			951
Inventories		1,937			2,671
Trade receivable, net		372			319
Net operating loss carryforwards		93			500
Other		1,299			520
		6,728			7,345
Valuation allowance		(719	)		(500	)
		6,009			6,845
Current deferred tax liabilities:
Prepaid expenses		(522	)		(637	)
Current deferred tax assets, net		5,487			6,208
Noncurrent deferred tax assets:
Net operating loss carryforwards		489			211
Tax credit carryforwards		996			478
Accrued employee benefits		4,483			3,740
Other assets		6,067			5,520
Other		142			138
		12,177			10,087
Valuation allowance		(1,139	)		(1,394	)
		11,038			8,693
Noncurrent deferred tax liabilities:
Property and equipment		(23,903	)		(19,343	)
Intangible assets		(1,150	)		(1,192	)
Noncurrent deferred tax liabilities, net		(14,015	)		(11,842	)
Net deferred tax liabilities	$	(8,528	)	$	(5,634	)

Schedule of Unrecognized Tax Benefits

A summary of the changes in the unrecognized tax benefits during the years ended December 31, 2014, 2013 and 2012 is presented below (in thousands):

	2014			2013			2012
Unrecognized tax benefits, beginning of year	$	6,207		$	5,245		$	309
Decreases for settlements		(3,265	)		—			—
Decreases for lapse in statute of limitations		(115	)		—			—
Decreases for positions taken in current year		(615	)		—			—
Increases for positions taken in prior years		101			646			3,571
Decreases for positions taken in prior years		—			(696	)		(184	)
Increases for positions taken in the current year		—			1,012			1,549
Unrecognized tax benefits, end of year	$	2,313		$	6,207		$	5,245

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Share-Based Compensation Plans

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-Based Compensation Plans

11. SHARE-BASED COMPENSATION PLANS:

The Company has one active stock incentive plan for employees and directors, the 2007 Stock Incentive Plan, which provides for awards of stock options to purchase shares of common stock, stock appreciation rights, restricted and unrestricted shares of common stock, restricted stock units (“RSUs”) and performance share awards (“PSAs”). In addition, the Company has one inactive stock option plan, the 1995 Stock Options Plan for Nonemployee Directors, under which previously granted options remain outstanding. The plans provide that options become exercisable according to vesting schedules, which range from immediate to ratably over a 60-month period. Options terminate 10 years from the date of grant. The plans also provide for other equity instruments, such as RSUs and PSAs, which grant the right to receive a specified number of shares over a specified period of time. RSUs are service-based awards and vest according to vesting schedules, which range from immediate to ratably over a three-year period. PSAs are service-based awards with a market-based vesting condition. Vesting of the market-based PSAs is dependent upon the performance of the market price of the Company’s stock relative to a comparator group of companies and ranges from two to three years. The following summarizes share-based compensation expense recorded:

	Year ended December 31,
	2014		2013		2012
	(in thousands)
Cost of sales	$	337	$	662	$	432
Selling, general and administrative expenses		2,609		2,398		2,616
Total	$	2,946	$	3,060	$	3,048

As of December 31, 2014, unrecognized compensation expense related to the unvested portion of the Company’s RSUs and PSAs was $4.1 million, which is expected to be recognized over a weighted average period of 1.7 years.

There were 643,393 shares of common stock available for future issuance under the Company’s stock compensation plans at December 31, 2014.

Stock Options Awards

A summary of status of the Company’s stock options as of December 31, 2014 and changes during the three years then ended is presented below:

	Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life		Aggregate Intrinsic Value
						(in years)		(in thousands)
Balance, December 31, 2011		71,597			21.26
Options granted		—			—
Options exercised		(24,597	)		17.58
Options cancelled		—			—
Balance, December 31, 2012		47,000			23.19
Options granted		—			—
Options exercised		(7,000	)		10.31
Options cancelled		—			—
Balance, December 31, 2013		40,000			25.44
Options granted		—			—
Options exercised		(2,000	)		14.00
Options cancelled		—			—
Balance, December 31, 2014		38,000			26.05
Exercisable and Outstanding, December 31, 2014		38,000			26.05		3.68	$	424

The total intrinsic value, defined as the difference between the current market value and the grant price, of options exercised during the years ended December 31, 2014, 2013 and 2012 was $43,000, $0.1 million and $0.1 million, respectively.

The following table summarizes information about stock options outstanding at December 31, 2014:

Options Outstanding					Options Exercisable
Exercise Price Per Share	Number of Options		Weighted Average Remaining Contractual Life (years)	Weighted Average Exercise Price Per Share	Number of Options		Weighted Average Exercise Price Per Share
$22.07		4,000	0.36	22.07		4,000	22.07
$24.15		24,000	5.25	24.15		24,000	24.15
$28.31		4,000	1.16	28.31		4,000	28.31
$34.77		6,000	1.28	34.77		6,000	34.77
		38,000	3.68	26.05		38,000	26.05

There were no options granted during 2014, 2013 or 2012.

Restricted Stock Units and Performance Awards

The Company estimates the fair value of Restricted Stock Units (“RSUs”) and Performance Stock Awards (“PSAs”) using the value of the Company’s stock on the date of grant, with the exception of market-based PSAs, for which a Monte Carlo simulation model is used. The assumptions used in the Monte Carlo simulation model for PSAs granted during each year were:

	2014	2013	2012
Expected stock price volatility	23.7% - 65.0%	24.6% - 60.1%	33.3% - 75.7%
Risk free interest rate	0.61%	0.41%	0.24%
Expected dividend yield	0%	0%	0%

A summary of status of the Company’s RSUs and PSAs as of December 31, 2014 and changes during the three years then ended is presented below:

	Number of RSUs and PSAs (1)			Weighted Average Grant Date Fair Value
Unvested RSUs and PSAs at December 31, 2011		193,981		$	24.41
RSUs and PSAs granted		115,306			29.06
Unvested RSUs and PSAs cancelled		(39,306	)		28.44
RSUs and PSAs vested		(26,840	)		23.13
Unvested RSUs and PSAs at December 31, 2012		243,141			26.11
RSUs and PSAs granted		117,966			34.24
Unvested RSUs and PSAs cancelled		(16,002	)		27.45
RSUs and PSAs vested		(88,018	)		23.37
Unvested RSUs and PSAs at December 31, 2013		257,087			30.69
RSUs and PSAs granted		87,353			41.76
Unvested RSUs and PSAs cancelled		(32,756	)		32.36
RSUs and PSAs vested (2)		(80,469	)		25.81
Unvested RSUs and PSAs at December 31, 2014		231,215		$	36.34

(1) The number of shares disclosed in this table are at the target level of 100%.

(2) 13,161 additional shares were vested for performance share awards that were granted in 2011 for the three-year performance period ended December 31, 2013, based on achievement of an actual payout percentage of 143%.

The unvested balance of RSUs and PSAs at December 31, 2014 includes approximately 185,000 PSAs included at a target level. The vesting of these awards is subject to the achievement of specified market-based conditions, and the actual number of common shares that will ultimately be issued will be determined by multiplying this number of PSAs by a payout percentage ranging from 0% to 200%.

The total fair value of RSUs and PSAs vested during the years ended December 31, 2014, 2013, and 2012 was $3.5 million, $2.1 million, and $0.6 million, respectively.

Stock Awards

For the years ended December 31, 2014, 2013 and 2012, stock awards were granted to non-employee directors, which vested immediately upon issuance, as follows: 9,150 shares; 4,912 shares; and 4,807 shares, respectively. The Company recorded compensation expense based on the fair market value per share of the awards on the grant dates of $36.00 and $36.41 in 2014, $27.49 in 2013, and $23.40 in 2012.