Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Supplemental Cash Flow Elements [Abstract]
Amount paid for interest	$ 64,536	$ 57,144	$ 45,472
Standstill related aggregate paid-in-kind interest	16,394	0	0
Accrued capital expenditures	6,333	6,492	13,824
Standstill related non-cash interest	3,626	0	0
Refund for income taxes, net	$ (14,530)
Amount paid for income taxes, net		$ 9,261	$ 42,003