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

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Stock-Based Compensation - Performance-based Awards (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs Granted (in shares)	4,140
FMV
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Valuation Method	Fair Market Value		Fair Market Value
Black-Scholes Merton
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Valuation Method	Black-Scholes-Merton
Monte-Carlo
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Valuation Method	Monte-Carlo Simulation	Monte-Carlo Simulation		Monte-Carlo Simulation
Performance-based awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 1,400			$ 200
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs Granted (in shares)	2,071
RSUs Vested (in shares)	291
Restricted stock units \| FMV
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs Granted (in shares)	436		188
Restricted stock units \| Monte-Carlo
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs Granted (in shares)	300	50		300
RSUs Vested (in shares)				69
Employee and non-employee stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Granted (in shares)	409
Stock-based compensation expense	$ 7,417			$ 4,051
Employee and non-employee stock options \| Black-Scholes Merton
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Granted (in shares)	129
Employee and non-employee stock options \| Monte-Carlo
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Granted (in shares)	150			200
Options Vested (in shares)				38
Number of options vested				38