Income Tax (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Unrecognized tax position	$ 0	$ 0
Interest and penalties on unrecognized tax benefits	0	$ 0
Federal operating loss carryforwards, set to begin to expire in 2024	12,700
Idaho state operating loss carryforwards, set to begin to expire in 2024	11,500
State operating loss carryforwards, set to begin to expire in 2024	$ 85