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Income Taxes - Schedule of Deferred Tax Assets (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Depreciation	$ 89,000	$ 116,000
Allowance for bad debts	225,000	393,000
Net operating loss carry-forwards	15,575,000	24,916,000
Stock option expense	257,000	1,272,000
Research and other credits	1,266,000	1,210,000
Other temporary differences	15,000	15,000
Total gross deferred tax assets	17,427,000	27,922,000
Less valuation allowance	(17,427,000)	(27,922,000)
Deferred Tax Assets, Net of Valuation Allowance

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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