Income Taxes, Net Deferred Tax Asset (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Net Deferred Tax Asset Arising Primarily from NOL Carryforwards and AMT Credit Carryforwards [Abstract]
Deferred tax asset	$ 38,140,000	$ 40,815,000
Valuation allowance	(38,140,000)	(35,445,000)
Net deferred tax asset recognized	$ 0	$ 5,370,000