Income Taxes (Details Narrative) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
U.S. statutory income tax rate	21.00%	34.00%
Operating loss carryforwards	$ 100,300,000
Net operating loss carryovers expiring unused	92,000,000
Reserves for uncertain tax positions	100,000	$ 100,000
Accrued interest and penalties	100,000
Federal [Member]
Net operating loss carryovers expiring unused	$ 284,700,000
Federal [Member] | Minimum [Member]
Operating loss carryforwards, expiration date	Dec. 31, 2030
Federal [Member] | Maximum [Member]
Operating loss carryforwards, expiration date	Dec. 31, 2037
State [Member]
Net operating loss carryovers expiring unused	$ 1,900,000
Number of prior years subject to examination	10 years
State [Member] | Minimum [Member]
Operating loss carryforwards, expiration date	Dec. 31, 2018
State [Member] | Maximum [Member]
Operating loss carryforwards, expiration date	Dec. 31, 2037