Restructuring Costs (Tables)

12 Months Ended

Dec. 31, 2019

Restructuring And Related Activities [Abstract]

Summary of Activity and Estimated Timing of Future Payouts for Accrued Restructuring Costs

The following tables show the activity and estimated timing of future payouts for accrued restructuring costs (in thousand):

	Year Ended December 31,
	2019			2018
Balance as of December 31, 2018	$	-		$	—
Restructuring costs		2,343			—
Non-cash asset impairment charge		(375	)		—
Cash payments		(1,507	)		—
Balance as of December 31, 2019	$	461		$	—

	As of December 31,
Estimated timing of future payments:	2019		2018
Expected to be paid in 2020	$	461	$	—