Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2019

Revenue From Contract With Customer [Abstract]

Disaggregation of Revenue

Information regarding revenues disaggregated by geographic area is as follows:

	Three months ended June 30,				Six months ended June 30,
(In thousands)	2019		2018		2019		2018
Revenues:
United States	$	90,258	$	97,910	$	181,757	$	189,063
Foreign:
Asia		2,287		3,161		3,739		4,861
Canada		3,821		3,529		7,318		6,789
Europe		4,449		5,101		9,801		10,148
Mexico		1,003		483		1,837		1,106
Middle East		1,481		3,204		3,065		5,356
Other		243		260		906		1,366
Total	$	103,542	$	113,648	$	208,423	$	218,689

Information regarding revenues disaggregated by the timing of when goods and services are transferred is as follows:

	Three months ended June 30,				Six months ended June 30,
(In thousands)	2019		2018		2019		2018
Revenue recognized over time	$	4,003	$	3,061	$	7,756	$	5,748
Revenue recognized at a point in time		99,539		110,587		200,667		212,941
Total	$	103,542	$	113,648	$	208,423	$	218,689

Contract with Customer, Liability and Receivables

The opening and closing balances of the Company's receivables and contract liabilities are as follows:

	June 30, 2019		December 31, 2018
(In thousands)
Receivables	$	60,294	$	66,300
Contract liabilities	$	17,369	$	15,793