Net Deferred Tax Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Deferred tax assets:
Net operating losses	$ 52,320	$ 42,579
Capital losses	361	361
Deferred compensation	22	18
Total deferred tax assets	52,703	42,958
Valuation allowance	(44,654)	(38,166)
Deferred tax assets, net	8,049	4,792
Deferred tax liabilities:
State deferreds	(8,070)	(4,814)
Other investment	21	22
Total deferred tax liabilities	(8,049)	(4,792)
Net deferred taxes	$ 0	$ 0