Income Taxes - Provision (Benefit) for Income taxes from Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Current income tax expense:
U.S. federal	$ 3,858	$ 0
U.S. state	710	136
Canada	1,288	291
Total	5,856	427
Deferred income tax expense (benefit):
U.S. federal	236	2,012
U.S. state	52	303
Canada	(472)	(289)
Total	(184)	2,026
Total income tax expense (benefit):
U.S. federal	4,094	2,012
U.S. state	762	439
Canada	816	2
Total	$ 5,672	$ 2,453