Revenue - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue remaining performance obligation	$ 237,691
Disaggregation of Revenue
Total net sales	128,775	$ 150,469
Contract with customer, assets	32,438		$ 37,032
Contract with customer, liability	5,840		$ 4,472
Contract assets transferred to receivables	15,600
Cash proceeds from liability contract	2,943
Revenue recognized from contract liability	$ 2,614	$ 948
Over time
Disaggregation of Revenue
Customer revenue transferred over-time	25.50%	27.70%
Total net sales	$ 32,777	$ 41,748
Over time | Performance Based
Disaggregation of Revenue
Total net sales	24,432	31,837
Over time | Delivery Based
Disaggregation of Revenue
Total net sales	$ 8,345	$ 9,911
Point in time
Disaggregation of Revenue
Customer revenue transferred over-time	74.50%	72.30%
Total net sales	$ 95,998	$ 108,721
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue remaining performance obligation	7.90%
Performance obligations expected to be satisfied, expected timing	12 months