Contract Assets and Liabilities (Tables)

3 Months Ended

Mar. 31, 2019

Contract with Customer, Asset and Liability [Abstract]

Schedule of Contract Assets and Contract Liabilities

As of March 31, 2019 and December 31, 2018 Contract assets and contract liabilities consisted of the following:

(in thousands)	March 31, 2019	December 31, 2018
Contract assets	$57,869	$57,447
Contract liabilities	9,865	9,025