Common Stock Incentive Plan - Summary (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Oct. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
General and administrative expense
Common Stock Incentive Plan
Share-based compensation costs recognized		$ 13,700	$ 27,300	$ 13,900
2012 Plan
Common Stock Incentive Plan
Plan term from the date of adoption		10 years
2012 Plan | Maximum
Common Stock Incentive Plan
Authorized shares		3,985,734
CEO
Severance Related Expense
Cash	$ 9,817
Stock compensation	17,902
Professional fees	574
Total value of severance	28,293
Amount accrued for CEO compensation prior to separation	(9,642)
Incremental severance	$ 18,651
CEO | General and administrative expense
Common Stock Incentive Plan
Share-based compensation costs related to accelerated equity awards			$ 11,800