Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 117,842	$ 108,508
Revenue, remaining performance obligation, percentage	100.00%	100.00%
Revenue recognized over time
Disaggregation of Revenue [Line Items]
Revenues	$ 6,461	$ 4,804
Revenue, remaining performance obligation, percentage	5.50%	4.40%
Revenue recognized at a point in time
Disaggregation of Revenue [Line Items]
Revenues	$ 111,381	$ 103,704
Revenue, remaining performance obligation, percentage	94.50%	95.60%
United States
Disaggregation of Revenue [Line Items]
Revenues	$ 94,266	$ 94,492
Asia
Disaggregation of Revenue [Line Items]
Revenues	4,789	1,548
Canada
Disaggregation of Revenue [Line Items]
Revenues	2,613	3,136
Europe
Disaggregation of Revenue [Line Items]
Revenues	11,747	4,775
Mexico
Disaggregation of Revenue [Line Items]
Revenues	1,885	1,970
Middle East
Disaggregation of Revenue [Line Items]
Revenues	2,176	1,537
Other
Disaggregation of Revenue [Line Items]
Revenues	$ 366	$ 1,050