Data by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from unaffiliated customers (As Restated)	$ 204,570	$ 149,508	$ 131,065	$ 126,642	$ 198,166	$ 171,301	$ 135,583	$ 125,032	$ 257,707	$ 260,615	$ 407,216	$ 431,916	$ 611,786	$ 630,082	$ 612,056
Property, plant and equipment, net	22,324	$ 22,193	$ 21,649	$ 20,984	20,842	$ 20,988	$ 19,088	$ 17,643	$ 21,649	$ 19,088	$ 22,193	$ 20,988	22,324	20,842	15,979
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from unaffiliated customers (As Restated)													463,608	488,520	478,770
Property, plant and equipment, net	16,828				15,344								16,828	15,344	10,974
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from unaffiliated customers (As Restated)													148,178	141,562	133,286
Property, plant and equipment, net	$ 5,496				$ 5,498								$ 5,496	$ 5,498	$ 5,005