Severance and Retention (Tables)

12 Months Ended

Dec. 31, 2020

Restructuring and Related Activities [Abstract]

Summary of Severance and Retention Expense

	Year Ended December 31, 2020		Year Ended December 31, 2019
Costs of revenues	$	950	$	301
General and administrative		469		567
Sales and marketing		1,076		516
Research and development		8		19
Total	$	2,503	$	1,403

Summary of Severance Related Liabilities within Accounts Payable and Accrued Expense

The activity and balance of severance-related liabilities, which are recorded within Accounts payable and accrued expense in our Consolidated Balance Sheet, are as follows (in thousands):

Balance at December 31, 2018	$	555
Payments		(1,600	)
Expense		1,403
Balance at December 31, 2019	$	358
Payments		(1,395	)
Expense		2,503
Balance at December 31, 2020	$	1,466