UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Allowance for doubtful accounts	$ 1,798	$ 1,546
Preferred stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Preferred stock, shares authorized (in shares)	49,995,966	49,995,966
Preferred stock, shares issued (in shares)	150.33	105.33
Preferred stock, shares outstanding (in shares)	150.33	105.33
Common stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares outstanding (in shares)	140,277,195	139,060,180
Common stock, shares issued (in shares)	140,277,195	139,060,180
Eight Percent Series C Redeemable Preferred Stock
Preferred stock, dividend rate, percentage	8.00%
Preferred stock, par value (in dollars per share)	$ 4,500,000
Preferred stock, shares outstanding (in shares)	150.33	105.33