Stock-based Compensation - Restricted Stock Units (Details) - Restricted stock units $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2022 USD ($) $ / shares shares
Shares
Unvested RSUs, Beginning balance (in shares)	1,711,318
Shares, Granted (in shares)	200,417
Shares, Vested (in shares)	(949,039)
Shares, Cancelled/Forfeited (in shares)	(142,604)
Non-vested RSUs, Ending balance (in shares)	820,092
Weighted Average Grant Date Fair Value
Unvested RSUs, Beginning balance (in dollars per share) | $ / shares	$ 4.36
Weighted Average Grant Date Fair Value, Granted (in dollars per share) | $ / shares	1.18
Weighted Average Grant Date Fair Value, Vested (in dollars per share) | $ / shares	4.36
Weighted Average Grant Date Fair Value, Cancelled/Forfeited (in dollars per share) | $ / shares	4.36
Non-vested RSUs, Ending balance (in dollars per share) | $ / shares	$ 3.58
Additional disclosures
Shares, Cancelled	142,604
Vested and undistributed	39,848
Unrecognized compensation costs | $	$ 2.9
Recognition period	2 years