Segment Reporting - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Total revenue	$ 130,705	$ 121,721	$ 378,829	$ 372,791
Injection Molding
Segment Reporting Information [Line Items]
Total revenue	51,688	48,940	152,455	155,693
CNC Machining
Segment Reporting Information [Line Items]
Total revenue	52,916	47,489	149,317	141,809
3D Printing
Segment Reporting Information [Line Items]
Total revenue	21,622	19,823	63,952	59,458
Sheet Metal
Segment Reporting Information [Line Items]
Total revenue	4,291	5,219	12,478	15,066
Other Revenue
Segment Reporting Information [Line Items]
Total revenue	$ 188	$ 250	$ 627	$ 765