Stock Incentive Plan and Other Equity Activity (Details) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) shares	Mar. 31, 2019 USD ($) shares
Sale of Stock [Line Items]
Stock-based compensation expense | $	$ 2,234	$ 1,021
Shares withheld for taxes (in shares) | shares	46
Shares withheld for taxes | $	$ (772)	(564)
Shares issued from warrants | shares	110
Number of warrants exercised | shares	470
Fair value of warrants exercised | $	$ 1,477
Employee Stock Purchase Plan | ESPP
Sale of Stock [Line Items]
Stock-based compensation expense | $	$ 18	$ 0
Remaining authorized shares available for purchase (in shares) | shares	774
Treasury Stock
Sale of Stock [Line Items]
Shares withheld for taxes (in shares) | shares	46	45
Shares withheld for taxes | $	$ (668)	$ (564)