Business Acquisitions Narrative (Details) (Cleveland Roll Forming Environmental Division, Inc. d/b/a PECO [Member], USD $) In Thousands, unless otherwise specified	0 Months Ended	3 Months Ended
Apr. 30, 2014	Jun. 30, 2014
Cleveland Roll Forming Environmental Division, Inc. d/b/a PECO [Member]
Business Acquisition [Line Items]
Interest in capital stock (as a percent)	100.00%
Net cash consideration	$ 8,079
Cash consideration	8,250
Working capital adjustment	391
Cash acquired	562
Accounts receivable	2,215
Acquisition related costs		$ 48

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to items of consideration transferred in connection with a business combination for which the initial accounting was incomplete.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. 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.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount recognized as of the acquisition date for the assets, including goodwill, in excess of (less than) the aggregate liabilities assumed, less the noncontrolling interest in the acquiree.

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