Concentration Risk, Number of Customers Meeting Threshold

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Represents the amount of unallocated corporate expenses.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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The net result for the period of deducting operating expenses from operating revenues.

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The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items.

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The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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BUSINESS SEGMENTS - Segment Operations and Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended							6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2014	Jun. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2014 Segment	Dec. 31, 2013 Segment	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting [Abstract]
Number of segments												2us-gaap_NumberOfReportableSegments	3us-gaap_NumberOfReportableSegments
Segment Operations [Abstract]
Consolidated net sales	$ 51,886us-gaap_SalesRevenueNet	$ 51,911us-gaap_SalesRevenueNet	$ 46,769us-gaap_SalesRevenueNet	$ 49,339us-gaap_SalesRevenueNet	$ 52,331us-gaap_SalesRevenueNet	$ 55,554us-gaap_SalesRevenueNet	$ 44,836us-gaap_SalesRevenueNet	$ 98,680us-gaap_SalesRevenueNet	$ 100,390us-gaap_SalesRevenueNet	$ 150,566us-gaap_SalesRevenueNet	$ 152,720us-gaap_SalesRevenueNet	$ 202,561us-gaap_SalesRevenueNet	$ 202,060us-gaap_SalesRevenueNet	$ 192,737us-gaap_SalesRevenueNet
Segment operating income	3,406us-gaap_OperatingIncomeLoss	3,777us-gaap_OperatingIncomeLoss	3,083us-gaap_OperatingIncomeLoss	1,112us-gaap_OperatingIncomeLoss	5,191us-gaap_OperatingIncomeLoss	5,515us-gaap_OperatingIncomeLoss	(840)us-gaap_OperatingIncomeLoss	6,861us-gaap_OperatingIncomeLoss	4,675us-gaap_OperatingIncomeLoss	10,264us-gaap_OperatingIncomeLoss	9,864us-gaap_OperatingIncomeLoss	6,665us-gaap_OperatingIncomeLoss	10,978us-gaap_OperatingIncomeLoss	15,999us-gaap_OperatingIncomeLoss
Stock-based compensation							(894)
Other income (expense)	472us-gaap_OtherNonoperatingIncomeExpense	332us-gaap_OtherNonoperatingIncomeExpense	(435)us-gaap_OtherNonoperatingIncomeExpense	(157)us-gaap_OtherNonoperatingIncomeExpense	(247)us-gaap_OtherNonoperatingIncomeExpense	(420)us-gaap_OtherNonoperatingIncomeExpense	296us-gaap_OtherNonoperatingIncomeExpense	(103)us-gaap_OtherNonoperatingIncomeExpense	(124)us-gaap_OtherNonoperatingIncomeExpense	369us-gaap_OtherNonoperatingIncomeExpense	(371)us-gaap_OtherNonoperatingIncomeExpense	(313)us-gaap_OtherNonoperatingIncomeExpense	(528)us-gaap_OtherNonoperatingIncomeExpense	(32)us-gaap_OtherNonoperatingIncomeExpense
Interest expense	(137)us-gaap_InterestExpense	(174)us-gaap_InterestExpense	(109)us-gaap_InterestExpense	(164)us-gaap_InterestExpense	(129)us-gaap_InterestExpense	(183)us-gaap_InterestExpense	(172)us-gaap_InterestExpense	(283)us-gaap_InterestExpense	(355)us-gaap_InterestExpense	(420)us-gaap_InterestExpense	(484)us-gaap_InterestExpense	(551)us-gaap_InterestExpense	(648)us-gaap_InterestExpense	(832)us-gaap_InterestExpense
Interest income	1us-gaap_InvestmentIncomeInterest	1us-gaap_InvestmentIncomeInterest	5us-gaap_InvestmentIncomeInterest	2us-gaap_InvestmentIncomeInterest	1us-gaap_InvestmentIncomeInterest	1us-gaap_InvestmentIncomeInterest	3us-gaap_InvestmentIncomeInterest	5us-gaap_InvestmentIncomeInterest	4us-gaap_InvestmentIncomeInterest	6us-gaap_InvestmentIncomeInterest	5us-gaap_InvestmentIncomeInterest	38us-gaap_InvestmentIncomeInterest	7us-gaap_InvestmentIncomeInterest	13us-gaap_InvestmentIncomeInterest
Consolidated income before income taxes	3,742	3,936	2,544	793	4,816	4,913	(713)	6,480	4,200	10,219	9,014	5,839	9,809	15,148
Segment depreciation and amortization												13,154	12,268	11,228
Consolidated capital expenditures												21,403	16,223	15,133
Segment Assets [Abstract]
Assets	229,707us-gaap_Assets	241,792us-gaap_Assets	236,985us-gaap_Assets	240,545us-gaap_Assets	229,228us-gaap_Assets	232,117us-gaap_Assets	228,782us-gaap_Assets	241,792us-gaap_Assets	232,117us-gaap_Assets	229,707us-gaap_Assets	229,228us-gaap_Assets	219,329us-gaap_Assets	240,545us-gaap_Assets
Cash and cash equivalents	14,932	8,643	9,131	10,598	9,333	2,368	8,246	8,643	2,368	14,932	9,333	9,400	10,598	8,218	5,318
Prepaid expenses and other assets	6,783	7,120	6,044	4,277	3,888	5,415	5,867	7,120	5,415	6,783	3,888	6,123	4,277
Deferred tax assets				9,988us-gaap_DeferredTaxAssetsNet								9,691us-gaap_DeferredTaxAssetsNet	9,988us-gaap_DeferredTaxAssetsNet
Corporate property, plant and equipment	57,882us-gaap_PropertyPlantAndEquipmentNet	60,546us-gaap_PropertyPlantAndEquipmentNet	59,476us-gaap_PropertyPlantAndEquipmentNet	60,215us-gaap_PropertyPlantAndEquipmentNet	59,248us-gaap_PropertyPlantAndEquipmentNet	55,641us-gaap_PropertyPlantAndEquipmentNet	52,235us-gaap_PropertyPlantAndEquipmentNet	60,546us-gaap_PropertyPlantAndEquipmentNet	55,641us-gaap_PropertyPlantAndEquipmentNet	57,882us-gaap_PropertyPlantAndEquipmentNet	59,248us-gaap_PropertyPlantAndEquipmentNet	63,835us-gaap_PropertyPlantAndEquipmentNet	60,215us-gaap_PropertyPlantAndEquipmentNet
Assets held for sale	6,011	6,155	6,276	6,299	6,610	6,206	5,402	6,155	6,206	6,011	6,610	0	6,299
Consolidated sales [Member] \| Customer Concentration Risk [Member]
Segment Assets [Abstract]
Number of customers accounted for more than 10% of total net sales												0	0	0
Operating Segments [Member]
Segment Operations [Abstract]
Segment operating income												16,634	21,596	24,007
Consolidated capital expenditures												21,062	15,447	15,133
Segment Assets [Abstract]
Assets				212,034								197,297	212,034
Corporate, Non-Segment [Member]
Segment Operations [Abstract]
Unallocated corporate expenses												(6,381)	(7,217)	(3,565)
Stock-based compensation												(3,588)	(3,401)	(4,443)
Other income (expense)												(313)	(528)	(32)
Interest expense												(551)	(648)	(832)
Interest income												38	7	13
Consolidated capital expenditures												341	776	0
Segment Assets [Abstract]
Cash and cash equivalents				10,598								9,400	10,598
Prepaid expenses and other assets				6,170								6,438	6,170
Deferred tax assets				3,859								4,558	3,859
Corporate property, plant and equipment				1,585								1,636	1,585
Assets held for sale				6,299								0	6,299
AMK Technical Services [Member] \| Segment assets [Member]
Segment Reporting [Abstract]
Concentration risk percentage													3.00%
AMK Technical Services [Member] \| Consolidated sales [Member]
Segment Reporting [Abstract]
Concentration risk percentage													4.00%
AMK Technical Services [Member] \| Segment operating income [Member]
Segment Reporting [Abstract]
Concentration risk percentage													2.00%
NobelClad [Member]
Segment Operations [Abstract]
Consolidated net sales												97,108	118,409	115,333
Segment operating income												2,155	17,090	17,439
Segment depreciation and amortization												6,482	6,118	5,580
Consolidated capital expenditures												13,696	2,425	4,747
Segment Assets [Abstract]
Assets				99,115								93,383	99,115
DynaEnergetics [Member]
Segment Operations [Abstract]
Consolidated net sales												105,453	83,651	77,404
Segment operating income												14,479	4,506	6,568
Segment depreciation and amortization												6,672	6,150	5,648
Consolidated capital expenditures												7,366	13,022	10,386
Segment Assets [Abstract]
Assets				$ 112,919								$ 103,914	$ 112,919