Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Deferred tax assets
NOL carry-forward	$ 27,003,600	$ 25,881,900
General business credit carry-forwards	1,118,400	1,158,900
Deferred compensation	22,700	78,500
Allowance for doubtful accounts	3,200	31,600
Deferred tax liabilities
Depreciation	(13,300)	61,700
Valuation allowance	(28,134,600)	(27,212,600)
Net deferred tax asset
The income tax provision differs from the amount of income tax determined by applying the U.S. federal income tax rate to pretax income from continuing operations:
Federal income tax (expense) benefit at statutory rates	958,300	1,831,600
State income tax (expense) benefit at statutory rates	140,900	269,300
Change in valuation allowance	(1,099,200)	(2,100,900)
Income tax provision
Net operating loss carry-forwards	$ 69,240,000
Expiration of net operating loss carry-forwards	Dec. 31, 2033