Industry Segment and Geographic Areas (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	$ 182,440	$ 186,193	$ 175,858	$ 159,101	$ 147,324	$ 148,009	$ 137,833	$ 132,402	$ 703,592	$ 565,568	$ 505,198
Long-lived assets	73,878				73,542				73,878	73,542
Total assets	716,919				603,047				716,919	603,047
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									621,166	491,683	432,188
Long-lived assets	43,882				43,182				43,882	43,182
Total assets	550,018				466,697				550,018	466,697
Asia
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									13,545	14,995	16,736
Canada
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									12,958	12,768	11,867
Europe
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									39,106	28,718	30,359
Long-lived assets	12,807				12,923				12,807	12,923
Total assets	140,999				113,945				140,999	113,945
Mexico
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									4,258	3,931	5,110
Long-lived assets	17,189				17,437				17,189	17,437
Total assets	$ 25,902				$ 22,405				25,902	22,405
Middle East
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									10,381	9,286	7,176
Other
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									$ 2,178	$ 4,187	$ 1,762