Note 3 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue:
Revenue	$ 488,398	$ 488,098	$ 434,395
Injection Molding (Protomold) [Member]
Revenue:
Revenue	200,578	226,117	217,992
CNC Machining (Firstcut) [Member]
Revenue:
Revenue	188,372	166,811	131,587
3D Printing (Fineline) [Member]
Revenue:
Revenue	78,988	72,721	62,502
Sheet Metal [Member]
Revenue:
Revenue	19,498	20,397	18,838
Other Products [Member]
Revenue:
Revenue	962	2,052	3,476
UNITED STATES
Revenue:
Revenue	387,399	384,458	345,708
Europe [Member]
Revenue:
Revenue	92,770	90,399	74,796
JAPAN
Revenue:
Revenue	$ 8,229	$ 13,241	$ 13,891