Basis of Presentation - Purchase Price Allocation (Detail) (USD $) In Thousands, unless otherwise specified			9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 CPO Commerce, Inc [Member]
Business Acquisition [Line Items]
Purchase price, net of cash acquired			$ 31,825
Inventories			(13,051)
Accounts receivable			(2,658)
Other current assets			(307)
Property, plant and equipment, net			(488)
Intangible assets			(12,800)
Total assets acquired			(29,304)
Accounts payable			17,124
Accrued liabilities			2,130
Other long-term liabilities			51
Deferred income taxes			3,233
Total liabilities assumed			22,538
Goodwill	$ 381,687	$ 356,811	$ 25,059