Industry Segment and Geographic Areas (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Schedule of Information Regarding Revenues and Assets by Geographic Area

Information regarding revenues by geographic area is as follows:

	2019		2018		2017
	(In thousands)
Revenues:
United States	$	369,163	$	374,650	$	355,768
Foreign:
Asia		9,111		9,081		9,133
Canada		13,568		11,893		10,407
Europe		15,784		20,147		15,718
Mexico		5,791		3,603		3,601
Middle East		7,868		11,318		4,904
Other		3,340		3,040		2,909
Total	$	424,625	$	433,732	$	402,440

Information regarding assets by geographic area is as follows:

	2019		2018
	(In thousands)
Long-lived assets:
United States	$	51,539	$	54,904
Foreign:
Europe		14,768		15,247
Mexico		19,454		20,170
Total	$	85,761	$	90,321

	2019		2018
	(In thousands)
Total assets:
United States	$	326,248	$	293,943
Foreign:
Europe		72,296		74,707
Mexico		23,349		24,041
Total	$	421,893	$	392,691