Debt - Additional Information (Detail)	0 Months Ended	3 Months Ended	6 Months Ended		6 Months Ended					6 Months Ended																						6 Months Ended
	Aug. 27, 2013 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2013 USD ($)	Jun. 30, 2014 Cross Currency Interest Rate Contract [Member] Minimum [Member]	Jun. 30, 2014 Cross Currency Interest Rate Contract [Member] Maximum [Member]	Jun. 30, 2014 Aarding Thermal Acoustics B.V. ("Aarding") [Member]	Aug. 17, 2012 Aarding Thermal Acoustics B.V. ("Aarding") [Member] EUR (€)	Aug. 17, 2012 Aarding Thermal Acoustics B.V. ("Aarding") [Member] Minimum [Member]	Jun. 30, 2014 Flextor, Inc. ("Flextor") [Member] USD ($)	Jun. 30, 2014 Flextor, Inc. ("Flextor") [Member] CAD	Jun. 30, 2014 Flextor, Inc. ("Flextor") [Member] Minimum [Member] USD ($)	Jun. 30, 2014 Flextor, Inc. ("Flextor") [Member] Maximum [Member]	Jun. 30, 2014 Flextor, Inc. ("Flextor") [Member] Forward Contracts [Member] CAD	Jun. 30, 2014 Flextor, Inc. ("Flextor") [Member] Bank Guarantee Facility [Member] CAD	Jun. 30, 2014 Flextor, Inc. ("Flextor") [Member] Variable Line Of Credit [Member] CAD	Jun. 30, 2014 Bank Guarantee Facility [Member] Aarding Thermal Acoustics B.V. ("Aarding") [Member] USD ($)	Jun. 30, 2014 Bank Guarantee Facility [Member] Aarding Thermal Acoustics B.V. ("Aarding") [Member] EUR (€)	Dec. 31, 2013 Bank Guarantee Facility [Member] Aarding Thermal Acoustics B.V. ("Aarding") [Member] USD ($)	Dec. 31, 2013 Bank Guarantee Facility [Member] Aarding Thermal Acoustics B.V. ("Aarding") [Member] EUR (€)	Aug. 17, 2012 Bank Guarantee Facility [Member] Aarding Thermal Acoustics B.V. ("Aarding") [Member] EUR (€)	Jun. 30, 2014 Bank Overdrafts [Member] Aarding Thermal Acoustics B.V. ("Aarding") [Member] USD ($)	Jun. 30, 2014 Bank Overdrafts [Member] Aarding Thermal Acoustics B.V. ("Aarding") [Member] EUR (€)	Dec. 31, 2013 Bank Overdrafts [Member] Aarding Thermal Acoustics B.V. ("Aarding") [Member] USD ($)	Dec. 31, 2013 Bank Overdrafts [Member] Aarding Thermal Acoustics B.V. ("Aarding") [Member] EUR (€)	Aug. 17, 2012 Bank Overdrafts [Member] Aarding Thermal Acoustics B.V. ("Aarding") [Member] EUR (€)	Jun. 30, 2014 Term Loan [Member] USD ($)	Dec. 31, 2013 Term Loan [Member] USD ($)	Aug. 27, 2013 Term Loan [Member] USD ($)	Aug. 27, 2013 U.S. Dollar revolving loans [Member] USD ($)	Aug. 27, 2013 Multi-currency Revolving Credit Facility [Member] USD ($)	Jun. 30, 2014 Base Rate [Member] Minimum [Member]	Jun. 30, 2014 Base Rate [Member] Maximum [Member]	Jun. 30, 2014 Federal Funds Rate [Member]	Jun. 30, 2014 One-Month LIBOR [Member]	Jun. 30, 2014 Prime Rate [Member] Flextor, Inc. ("Flextor") [Member]
Line of Credit Facility [Line Items]
Senior secured credit facility																													$ 65,000,000	$ 70,500,000	$ 19,500,000
Increased credit facility commitment for either revolving credit facility or term loan facility	30,000,000
Aggregate principal amount outstanding under the credit facilities																	4,000,000	2,900,000	3,400,000	2,500,000		2,200,000	1,600,000	4,900,000	3,500,000		800,000	1,300,000
Unused credit availability under credit facility		69,200,000	69,200,000	66,700,000
Revolving loan expiration date	Aug. 27, 2018
Companies consolidated leverage ratio, Base Rate					0.50%	1.50%																										1.50%	2.50%			0.50%
Interest rate, basis spread																																		0.50%	1.00%
Weighted average interest rate on outstanding borrowings		2.22%	2.22%	2.23%			2.26%
Maximum consolidated leverage ratio		2.75	2.75
Minimum fixed charge coverage ratio			1.25
Increased interest rate of loan due to default		2.00%	2.00%
Other expenses for credit agreement		2,700,000	2,700,000
Capitalized deferred financing costs		600,000	600,000	600,000
Deferred charges Other asset		(1,713,000)	(1,713,000)	(1,918,000)
Amortization expense		200,000	300,000
Facilities agreement, amount								7,000,000			5,500,000			500,000	2,500,000	2,500,000					3,500,000					3,500,000
Working capital ratio, minimum										125.00%	125.00%
Working capital, minimum												1,000,000
Adjusted tangible net worth ratio, maximum													2.50
Adjusted tangible net worth, minimum										$ 1,300,000
Borrowers solvency ratio									30.00%
Maximum debt as proportion of EBITDA								3.0
Debt instrument variable interest rate description							3 months Euribor plus 195 basis points