Income Taxes - Schedule of Income Tax Benefit Computed Using Federal Statutory Income Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Computed federal tax expense (benefit) at statutory rate	$ (1,476)	$ 14,275	$ 16,298
State income taxes - net of federal tax benefit	(140)	1,865	2,056
Gain on condemnation of Valencia		4,312
Valuation allowance			(35,800)
Other differences	127	171	451
Income tax expense (benefit), Total	$ (1,489)	$ 20,623	$ (16,995)