Other Current Assets - Summary of Other Current Assets (Detail) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid insurance	$ 969,000	$ 228,000
Taxes receivable	2,281,000	299,000
RFL escrow	1,000,000	2,000,000
Other	1,806,000	2,224,000
Other current assets	$ 6,056,000	$ 4,751,000