Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2019

Revenue From Contract With Customer [Abstract]

Disaggregation of Revenue

Information regarding revenues disaggregated by geographic area is as follows:

	Three Months Ended March 31, 2019		Three Months Ended March 31, 2018
	(In thousands)
Revenues:
United States	$	91,499	$	91,153
Foreign:
Asia		1,452		1,700
Canada		3,497		3,260
Europe		5,352		5,047
Mexico		834		623
Middle East		1,584		2,152
Other		663		1,106
Total	$	104,881	$	105,041

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

	Three Months Ended March 31, 2019		Three Months Ended March 31, 2018
	(In thousands)
Revenue recognized over time	$	3,753		2,687
Revenue recognized at a point in time		101,128		102,354
Total	$	104,881	$	105,041

Contract with Customer, Liability and Receivables

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

	March 31, 2019		December 31, 2018
	(In thousands)
Receivables	$	68,095	$	66,300
Contract liabilities	$	16,686	$	15,793