Stock-Based Compensation - Early Exercise Of Stock Options (Details)	6 Months Ended
Jun. 30, 2020 shares
Stock-Based Compensation
Unvested balance at beginning of period	755
Vested	(163)
Forfeited	(267)
Unvested balance at end of period	325

Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Stock, Number of Shares Exercised, Forfeited In Period

No definition available.

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration