Basis of Presentation and Consolidation - Schedule of Non-Controlling Interest in Subsidiary (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Temporary Equity Disclosure [Abstract]
Balance at the beginning of the period			$ 239	$ 69
Net income (loss) attributable to Silver Creek	$ (208)	$ (123)	(393)	204
Balance at the end of the period	$ (154)	$ 273	$ (154)	$ 273