Goodwill (Schedule of changes in the carrying value of goodwill) (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Beginning balance			$ 1,410
Impairment				$ (95)
Ending balance	$ 1,410		1,410	1,410
RAM
Goodwill [Roll Forward]
Beginning balance		$ 1,505	1,410	1,505
Impairment	0	$ (95)	0	(95)
Ending balance	1,410		1,410	1,410
Accumulated impairment	$ 1,116		$ 1,116	$ 1,116