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Stock-Based Compensation - Non-cash stock-based compensation expense (Details) - USD ($) $ in Thousands, shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total non-cash stock compensation expense	$ 1,688	$ 1,279	$ 2,753	$ 2,295
Unrecognized compensation costs	9,500		$ 9,500
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total non-cash stock compensation expense	$ 600
2015 Omnibus Equity Incentive Plan \| Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for future grants (in shares)	2.5		2.5
Cost of sales
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total non-cash stock compensation expense	$ 1	0	$ 1	1
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total non-cash stock compensation expense	652	236	735	425
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total non-cash stock compensation expense	268	241	529	434
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total non-cash stock compensation expense	$ 767	$ 802	$ 1,488	$ 1,435