Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Accounts receivable, net of allowances	$ 8,260	$ 9,980
Property and equipment, net of accumulated depreciation	$ 153,335	$ 130,077
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	44,000,000	4,200,000
Common stock, shares issued (in shares)	37,637,000	1,556,000
Common stock, shares outstanding (in shares)	37,637,000	1,556,000