Contract Assets and Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Revenue from Contract with Customer [Abstract]

Schedule of Contract Assets and Liabilities

Estimate of when contract liabilities will be recognized
within 12 months	$	5,963
within 12 to 24 months	1,247
greater than 24 months	154

The balance of contract assets and contract liabilities consisted of the following at December 31, 2018 and 2017 (in thousands):

	2018		2017
Contract assets
Current	$	1,145	$	325
Non-Current	188		—
	$	1,333	$	325
Contract Liabilities
Current	$	5,963	$	2,252
Non-current	1,401		4,442
	$	7,364	$	6,694