Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Investments, Owned, Federal Income Tax Note [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards	$ 3,629	$ 4,094
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	21.00%
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Tax Assets, Operating Loss Carryforwards	$ 3,629	$ 4,094
State and Local Income Tax Expense (Benefit), Continuing Operations	$ 1,100	$ 1,200
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	21.00%
State and Local Jurisdiction [Member]
Investments, Owned, Federal Income Tax Note [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards	$ 500	$ 600
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Tax Assets, Operating Loss Carryforwards	500	600
Domestic Tax Authority [Member]
Investments, Owned, Federal Income Tax Note [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards	3,100	3,500
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Tax Assets, Operating Loss Carryforwards	$ 3,100	$ 3,500