Change in Net Deferred Tax Asset (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Change In Net Deferred Tax Asset (Liability) [Rollforward]
Deferred Tax Assets (Liabilities), Net	$ (9)	$ 1,790
Deferred Tax (Expense) Benefit Related To Continuing Operations	330	153
Deferred Taxes, Stockholders' Equity For Change In Accumulated Other Comprehensive (Income) Loss	(1,858)	(1,952)
Deferred Tax Assets (Liabilities), Net	$ (1,537)	$ (9)