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Debt - Summary of Debt (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Total outstanding borrowings under Credit Facility	$ (1,816)	$ (1,918)
Total outstanding borrowings under Credit Facility	79,769	83,863
Total outstanding borrowings	82,173	89,082
Less: current portion	6,909	9,922
Total debt, less current portion	75,264	79,160
U S Dollar Euro [Member]
Debt Instrument [Line Items]
Total outstanding borrowings	275	310
Flextor, Inc. ("Flextor") [Member] | Canadian Dollar [Member]
Debt Instrument [Line Items]
Total outstanding borrowings
Aarding Thermal Acoustics B.V. ("Aarding") [Member] | US Dollar Borrowings [Member]
Debt Instrument [Line Items]
Total outstanding borrowings	2,129	4,909
Term Loan [Member]
Debt Instrument [Line Items]
Total outstanding borrowings under Credit Facility	59,585	63,781
U.S. Dollar revolving loans [Member] | US Dollar Borrowings [Member]
Debt Instrument [Line Items]
Total outstanding borrowings under Credit Facility	$ 22,000	$ 22,000

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- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399



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-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

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- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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