Basis of Presentation and Consolidation - Schedule of Non-Controlling Interest in Subsidiary (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Temporary Equity Disclosure [Abstract]
Balance at the beginning of the period			$ 239	$ 69
Net income (loss) attributable to Silver Creek	$ (207)	$ 208	(600)	412
Balance at the end of the period	$ (361)	$ 481	$ (361)	$ 481