Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands		6 Months Ended
	May. 29, 2015	Jun. 30, 2015
Business Acquisition [Line Items]
Purchase price in cash		$ 6,447
Brazos Technology Corporation [Member]
Business Acquisition [Line Items]
Cash acquired from acquisition	$ 312
Debt assumed from business acquisition	733
Purchase price in cash	$ 6,100
Number of common stock shares valued at acquisition	12,500
Common stock value at acquisition date	$ 1,500