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Stock Incentive Plan and Other Equity Activity (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Sale of Stock [Line Items]
Stock-based compensation expense	$ 1,765			$ 819			$ 7,961	$ 2,489
Shares withheld for taxes	$ (133)	$ (50)	$ (772)	(32)	$ (98)	$ (564)
Shares issued from warrants (in shares)	110						110
Number of warrants exercised (in shares)	470						470
Fair value of warrants exercised							$ 1,477
Employee Stock Purchase Plan | ESPP
Sale of Stock [Line Items]
Stock-based compensation expense	$ 18			$ 12			$ 54	$ 12
Remaining authorized shares available for purchase (in shares)	754						754
Treasury Stock
Sale of Stock [Line Items]
Shares withheld for taxes (in shares)	14	3	46	3		45
Shares withheld for taxes	$ (133)	$ (32)	$ (668)	$ (32)		$ (564)
Treasury Stock | RSU/PSU
Sale of Stock [Line Items]
Shares withheld for taxes (in shares)	11						60
Shares withheld for taxes	$ 105						$ 805
Treasury Stock | RSAs
Sale of Stock [Line Items]
Shares withheld for taxes (in shares)	3						13
Shares withheld for taxes	$ 28						$ 150

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