Condensed Consolidated Balance Sheets (USD $)	Jun. 30, 2013	Dec. 31, 2012
ASSETS
Cash and cash equivalents	$ 3,261,000	$ 1,614,000
Restricted cash	300,000	300,000
Investments - short term	3,228,000	4,794,000
Accounts receivable, net of allowance for doubtful accounts of $653,000 and $713,000 in 2012 and 2013, respectively	7,475,000	8,814,000
Financing receivables - current, net of allowance for doubtful accounts of $-0- in 2012 and 2013	3,749,000	3,143,000
Inventory, net	8,088,000	7,512,000
Deferred costs - current	1,813,000	2,380,000
Prepaid expenses and other current assets	971,000	1,043,000
Deferred tax asset - current	0	662,000
Total current assets	28,885,000	30,262,000
Investments - long term	7,942,000	9,064,000
Financing receivables - less current portion	10,752,000	10,814,000
Deferred costs - less current portion	3,382,000	2,651,000
Fixed assets, net	2,116,000	2,401,000
Goodwill	1,837,000	1,837,000
Intangible assets, net	2,684,000	3,230,000
Other assets	307,000	307,000
Assets, Total	57,905,000	60,566,000
LIABILITIES
Accounts payable and accrued expenses	5,929,000	5,638,000
Deferred revenue - current	4,156,000	4,689,000
Total current liabilities	10,085,000	10,327,000
Deferred rent	336,000	343,000
Deferred revenue - less current portion	7,535,000	5,869,000
Liabilities, Total	17,956,000	16,539,000
Commitments and Contingencies (Note 22)
STOCKHOLDERS' EQUITY
Preferred stock; authorized 5,000,000 shares, $0.01 par value; none issued	0	0
Common stock; authorized 50,000,000 shares, $0.01 par value; 12,678,000 and 12,779,000 shares issued at December 31, 2012 and June 30, 2013, respectively; shares outstanding, 12,088,000 and 12,151,000 at December 31, 2012 and June 30, 2013, respectively	122,000	122,000
Additional paid-in capital	103,772,000	103,135,000
Accumulated deficit	(60,431,000)	(56,102,000)
Accumulated other comprehensive income (loss)	(131,000)	53,000
Stockholders Equity Excluding Treasury Stock Value	43,332,000	47,208,000
Treasury stock; 590,000 shares and 628,000 shares at cost at December 31, 2012 and June 30, 2013, respectively	(3,383,000)	(3,181,000)
Total stockholders' equity	39,949,000	44,027,000
Total liabilities and stockholders' equity	$ 57,905,000	$ 60,566,000