Business Combination - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended		1 Months Ended	6 Months Ended	1 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Mar. 29, 2013 Business Combinations	Jun. 30, 2013 Business Combinations	Mar. 29, 2013 Notes Payable Business Combinations
Business Acquisition [Line Items]
Total consideration					$ 24,258,000
Cash consideration paid					13,128,000	15,000,000
Liabilities assumed							11,130,000
Withheld and placed into escrow					2,000,000
Net receivable from LAPIS					1,900,000
Acquisition-related transaction costs		681,000		5,191,000
Revenue						1,900,000
Costs related to sales	$ 62,883,000	$ 59,389,000	$ 117,251,000	$ 103,695,000		$ 1,800,000