Basis of Presentation and Consolidation - Schedule of Non-Controlling Interest in Subsidiary (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Temporary Equity Disclosure [Abstract]
Balance at the beginning of the period			$ 69	$ 337
Net loss attributable to Silver Creek	$ (123)	$ (181)	204	(350)
Balance at the end of the period	$ 273	$ (13)	$ 273	$ (13)