Equity Incentive Plan - Equity-based compensation (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Less amounts capitalized	$ (965)	$ (1,899)
Total equity-based compensation, net	2,415	7,598
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total equity-based compensation, gross	2,498	5,323
Stock option awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total equity-based compensation, gross	43	818
Share-settled
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total equity-based compensation, gross	3,341	9,305
Less amounts capitalized	(965)	(1,899)
Total equity-based compensation, net	2,376	7,406
Performance share awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total equity-based compensation, gross	756	3,164
Outperformance share awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total equity-based compensation, gross	44	0
Performance unit awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total equity-based compensation, gross	24	238
Phantom unit awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total equity-based compensation, gross	25	0
Cash-settled
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total equity-based compensation, gross	49	238
Less amounts capitalized	(10)	(46)
Total equity-based compensation, net	$ 39	$ 192

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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