Revenue Recognition - Summary of Disaggregated Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 122,382	$ 113,777	$ 380,394	$ 301,049
Transportation
Disaggregation of Revenue [Line Items]
Revenues	62,342	65,277	209,750	164,940
Industrial
Disaggregation of Revenue [Line Items]
Revenues	31,879	24,204	87,764	65,260
Medical
Disaggregation of Revenue [Line Items]
Revenues	12,409	10,201	36,487	32,609
Aerospace and Defense
Disaggregation of Revenue [Line Items]
Revenues	11,275	11,038	35,724	29,416
Telecom & IT
Disaggregation of Revenue [Line Items]
Revenues	$ 4,477	$ 3,057	$ 10,669	$ 8,824