Contract Assets and Liabilities

12 Months Ended

Dec. 31, 2020

Revenue From Contract With Customer [Abstract]

Contract Assets and Liabilities

3.  CONTRACT ASSETS AND LIABILITIES

The balance of contract assets and contract liabilities consist of the following (in thousands):

	December 31,
	2020		2019
Contract assets
Current	$	1,238	$	2,183
Non-Current		—		244
	$	1,238	$	2,427
Contract Liabilities
Current	$	953	$	4,473
Non-current		293		383
	$	1,246	$	4,856

Estimate of when contract liabilities will be recognized
within 12 months	$	953
within 12 to 24 months	$	293
greater than 24 months	$	—

The current portion of contract assets are included in our accounts receivable as of December 31, 2020 and 2019.

The current portion of contract liabilities is included in unearned revenue and the non-current portion of contract liabilities is included in other long-term liabilities. We did not recognize any impairment losses on our receivables and contract assets for the year ended December 31, 2020 and 2019.