Supplemental Cash Flow Information - Cash Payments and Non-Cash Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Supplemental cash flow information:
Cash paid for interest	$ 1,186	$ 21	$ 6
Cash paid for income taxes	4,365	3,409	5,498
Supplemental noncash investing and financing activities:
Transfer of service and sales demonstration inventory to fixed assets	2,226	1,688	3,044
Assumption of contingent consideration from acquisition	0	980	0
Purchases of Property, plant, equipment and Intangibles accrued but not paid	$ 754	$ 0	$ 0