Acquisitions - Additional Information (Detail)	3 Months Ended		6 Months Ended		0 Months Ended		3 Months Ended		6 Months Ended				3 Months Ended	6 Months Ended
	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)	Jan. 15, 2014 Thomas Plant USD ($)	Jan. 15, 2014 Thomas Plant GBP (£)	Jun. 30, 2014 Thomas Plant USD ($)	Jun. 30, 2013 Thomas Plant USD ($)	Jun. 30, 2014 Thomas Plant USD ($)	Jun. 30, 2013 Thomas Plant USD ($)	Jan. 15, 2014 Thomas Plant USD ($)	Jan. 15, 2014 Thomas Plant GBP (£)	Jun. 30, 2014 Thomas Plant Cost of Sales USD ($)	Jun. 30, 2014 Thomas Plant Cost of Sales USD ($)	Jun. 30, 2014 Other Acquisitions USD ($)
Business Acquisition [Line Items]
Percentage of equity interests acquired											100.00%	100.00%
Business acquisition cash paid					$ 61,500,000	£ 37,400,000
Business acquisition, issuance of common stock shares					581,432	581,432
Business acquisition, common stock value					9,000,000	5,500,000
Business acquisition, contingent cash consideration payable											9,000,000	5,500,000
Net Sales	115,321,000	110,665,000	233,732,000	224,294,000			13,500,000		30,400,000
Net income (loss)	(2,910,000)	(783,000)	(4,987,000)	(804,000)			200,000		200,000
Business combination increase in fair value of inventory													400,000	900,000
Amortization of intangible assets								800,000		1,700,000
Elimination of acquisition costs							900,000		900,000
Interest Expense and Debt Issuance Cost								500,000		1,000,000
Adjustment to compensation expense								5,700,000		5,700,000
Business acquisition cash paid					$ 61,302,000										$ 5,300,000