Other Long-Term Liabilities (Tables)

6 Months Ended

Jun. 30, 2020

Other Liabilities, Noncurrent [Abstract]

Schedule of Other Long-Term Liabilities

Other long-term liabilities consist of the following as of December 31, 2019 and June 30, 2020 (in thousands):

	December 31, 2019		June 30, 2020
Contract liabilities, net of current portion	$	30,925	$	32,210
Deferred payments related to acquisitions	4,963		4,232
Asset retirement obligations	1,961		1,902
Employee separation costs	1,838		361
Other	1,764		1,860
Other long-term liabilities	$	41,451	$	40,565