Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Taxes [Abstract]

Components of the Company's net deferred taxes

	Year ended December 31,
	2011			2012
Deferred tax assets (liability):
Net operating loss carryforwards	$	23,741,000		$	24,182,000
Deferred revenue		176,000			192,000
Goodwill and other intangibles		(30,000	)		(53,000	)
Stock based Compensation		251,000			281,000
Inventory		177,000			167,000
Allowance for Dobtful accounts		8,000			14,000
Accrued liabilities		104,000			101,000
Property and equipment		80,000			159,000
Software development costs		(36,000	)		(20,000	)
Total deferred tax assets		24,471,000			25,023,000
Less: valuation allowance		(24,471,000	)		(25,023,000	)
Net deferred taxes	$	—		$	—

Reconciliation between the income tax expense (benefit) calculated by applying statutory rates to net loss and the income tax benefit

	Year ended December 31,
	2011			2012
U.S. federal statutory rate applied to pretax income	$	(1,027,000	)	$	(521,058	)
Change in valuation allowance		(2,868,000	)		552,000
Expiration of net operating loss carryforwards		4,218,000			—
Permanent Differences & Other		(323,000	)		(30,942	)
	$	—		$	—