Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Property and equipment, net of accumulated depreciation and amortization	$ 76,428	$ 72,649
Intangible assets, net of accumulated amortization	$ 781	$ 732
Common stock, outstanding shares (in shares)	15,231,852	9,424,334
Treasury stock, at cost shares (in shares)	363,361	38,024
Series A Preferred Stock
Series A preferred stock, outstanding shares (in shares)	32,788	0