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Stock Incentive Plan - Narrative (Details) - USD ($)		12 Months Ended
	Apr. 03, 2017	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Subsidiary, Sale of Stock [Line Items]
Value of shares withheld for taxes		$ 7,338,000	$ 1,985,000	$ 1,109,000
Warrants exercised (in shares)		530,000	470,000
Stock issued during period (in shares)		315,000	110,000
Stock issued related to warrants exercised		$ 8,082,000	$ 1,477,000	$ 0
Warrants outstanding (in shares)		0
RSAs
Subsidiary, Sale of Stock [Line Items]
Total compensation cost attributable to shares awarded		$ 646,000
Share vesting period		3 years
Grants in the period (in shares)		29,000	51,000	52,000
Grants in the period (USD per share)		$ 23.19	$ 8.73	$ 12.06
Fair value of shares vested in period		$ 506,000	$ 799,000	$ 1,261,000
Vested (in shares)		55,000
Vested (in usd per share)		$ 9.26
Shares withheld for taxes (in shares)		1,000	11,000	17,000
Value of shares withheld for taxes		$ 27,000	$ 140,000	$ 255,000
RSUs
Subsidiary, Sale of Stock [Line Items]
Total compensation cost attributable to shares awarded		$ 2,128,000
Share vesting period		3 years
Grants in the period (in shares)		151,000	169,000	261,000
Grants in the period (USD per share)		$ 21.29	$ 13.52	$ 12.14
Fair value of shares vested in period		$ 2,742,000	$ 2,918,000	$ 1,709,000
Vested (in shares)		182,000
Vested (in usd per share)		$ 15.05
PSUs
Subsidiary, Sale of Stock [Line Items]
Total compensation cost attributable to shares awarded		$ 8,913,000
Share vesting period		3 years
Grants in the period (in shares)		397,000	176,000	310,000
Grants in the period (USD per share)		$ 21.88	$ 14.06	$ 11.81
Fair value of shares vested in period		$ 7,842,000	$ 1,620,000	$ 948,000
Vested (in shares)		658,000
Vested (in usd per share)		$ 11.91
RSUs and PSUs
Subsidiary, Sale of Stock [Line Items]
Shares withheld for taxes (in shares)		311,000	123,000	74,000
Value of shares withheld for taxes		$ 7,311,000	$ 1,845,000	$ 964,000
Warrants to the Lenders Under the Loan Agreement | Loan and Security Agreement
Subsidiary, Sale of Stock [Line Items]
Warrants, term	5 years
Number of warrants (in shares)	1,000,000
Warrant exercise price (USD per share)	$ 10.25
Stock Incentive Plan & ESPP
Subsidiary, Sale of Stock [Line Items]
Total compensation cost attributable to shares awarded		$ 11,771,000	11,643,000	3,788,000
Stock Incentive Plan
Subsidiary, Sale of Stock [Line Items]
Number of shares authorized to issue (in shares)					3,400,000
Number of shares available for grant (in shares)		882,000
Unrecognized compensation cost		$ 6,300,000
Weighted-average recognition period		1 year 2 months 12 days
Stock Incentive Plan | RSAs, RSUs and PSUs
Subsidiary, Sale of Stock [Line Items]
Total compensation cost attributable to shares awarded		$ 11,687,000	11,572,000	3,761,000
ESPP
Subsidiary, Sale of Stock [Line Items]
Number of shares available for grant (in shares)		725,000
ESPP | Employee Stock
Subsidiary, Sale of Stock [Line Items]
Total compensation cost attributable to shares awarded		$ 84,000	$ 71,000	$ 27,000
Maximum annual contribution per employee		15.00%
Maximum annual contribution amount		$ 25,000
Purchase price of common stock percent		85.00%

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