Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Supplemental cash payment information:
Interest paid		$ 11	$ 20
Income taxes (received, net of payments) paid		(351)	149
Supplemental non-cash activities:
Employee retention credit		1,164	0
JP3 PPP loan forgiveness		881	0
Supplemental non-cash investing and financing activities:
Stock issued in JP3 acquisition	$ 8,538	$ 0	$ 8,538