Acquisitions - Additional Information (Detail) $ in Thousands, £ in Millions				12 Months Ended
		Jan. 15, 2014 USD ($) shares	Jan. 15, 2014 GBP (£) shares	Dec. 31, 2015 USD ($)	Dec. 31, 2015 GBP (£)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2015 GBP (£)	Jan. 15, 2014 GBP (£)
Business Acquisition [Line Items]
Business acquisition cash paid		$ 61,302
Business acquisition, common stock value	[1]	$ 8,382
Charge recoded in selling, general and administrative expenses				$ 650		$ (4,203)
Thomas Plant
Business Acquisition [Line Items]
Percentage of equity interests acquired		100.00%							100.00%
Business acquisition cash paid		$ 61,300	£ 37.4
Business acquisition, issuance of common stock shares | shares		581,432	581,432
Business acquisition, common stock value		$ 9,000	£ 5.5
Business acquisition, contingent cash consideration payable		$ 9,000							£ 5.5
Net Sales						67,600
Income from operations						4,100
Amortization of intangible assets							$ 3,400
Elimination of acquisition costs						1,000	600
Interest Expense and Debt Issuance Cost							2,000
Adjustment to compensation expense							$ 2,200
Thomas Plant | Amended Agreement
Business Acquisition [Line Items]
Fair value of contingent consideration				4,000				£ 2.7
Charge recoded in selling, general and administrative expenses				$ 1,500	£ 1.0
Thomas Plant | Cost of Sales
Business Acquisition [Line Items]
Business combination increase in fair value of inventory						$ 900

[1] Share consideration issued is valued at the closing market price discounted to account for lack of marketability related to the lock up period as described in the share purchase agreement.