Basis of Presentation and Consolidation - Schedule of Non-Controlling Interest in Subsidiary (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Temporary Equity Disclosure [Abstract]
Balance at the beginning of the period			$ 69	$ 337
Net income (loss) attributable to Silver Creek	$ 208	$ (137)	412	(487)
Balance at the end of the period	$ 481	$ (150)	$ 481	$ (150)