Taxes (Schedule of Components of Income Tax) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ 518	$ (36)	$ 86
State	(569)	124	136
Total current	(51)	88	222
Deferred:
Federal	44	667	(52,309)
State		(507)	(389)
Total deferred	44	160	(52,698)
Provision for (benefit from) income taxes	$ (7)	$ 248	$ (52,476)