Stock-Based Compensation - Stock-Based Compensation Expense, Net of Forfeitures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense, net of forfeitures	$ 9,362	$ 13,730	$ 7,963
Equity Classified Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense, net of forfeitures	5,298	3,830	3,399
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense, net of forfeitures	2,555	2,468	2,257
Market based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense, net of forfeitures	1,255	0	0
Performance based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense, net of forfeitures	428	0	0
Director grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense, net of forfeitures	1,060	1,362	1,142
Liability-classified awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense, net of forfeitures	4,064	9,900	4,564
Market based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense, net of forfeitures	2,498	6,306	2,712
Performance based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense, net of forfeitures	258	1,814	963
Time vested RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense, net of forfeitures	633	1,040	357
Dividend equivalent units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense, net of forfeitures	$ 675	$ 740	$ 532