Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 4,631,000	$ 8,386,000	[1]
Restricted cash	300,000	300,000	[1]
Investments - short term	6,115,000	6,904,000	[1]
Accounts receivable, net of allowance for doubtful accounts of $366,000 and $754,000 in 2011 and 2012, respectively	7,328,000	7,947,000	[1]
Notes and sales-type lease receivables - current portion	739,000	1,217,000	[1]
Inventory, net	8,704,000	8,114,000	[1]
Deferred costs - current portion	3,047,000	1,950,000	[1]
Prepaid expenses and other current assets	1,578,000	2,192,000	[1]
Deferred tax asset - current	0	390,000	[1]
Total current assets	32,442,000	37,400,000	[1]
Investments - long term	7,844,000	9,779,000	[1]
Notes and sales-type lease receivable - less current portion	12,639,000	4,101,000	[1]
Deferred costs - less current portion	2,180,000	1,916,000	[1]
Fixed assets, net	2,564,000	3,092,000	[1]
Goodwill	1,837,000	1,837,000	[1]
Intangible assets, net	3,522,000	4,399,000	[1]
Other assets	307,000	307,000	[1]
Assets, Total	63,335,000	62,831,000	[1]
LIABILITIES
Accounts payable and accrued expenses	8,125,000	9,482,000	[1]
Deferred revenue - current	4,846,000	3,090,000	[1]
Total current liabilities	12,971,000	12,572,000	[1]
Deferred rent	346,000	327,000	[1]
Deferred revenue - less current portion	5,267,000	4,332,000	[1]
Liabilities, Total	18,584,000	17,231,000	[1]
Commitments and Contingencies (Note 21)			[1]
STOCKHOLDERS' EQUITY
Preferred stock; authorized 5,000,000 shares, $0.01 par value; none issued	0	0	[1]
Common stock; authorized 50,000,000 shares, $0.01 par value; 12,546,000 and 12,663,000 shares issued at December 31, 2011 and September 30, 2012, respectively; shares outstanding, 12,055,000 and 12,075,000 at December 31, 2011 and September 30, 2012, respectively	121,000	121,000	[1]
Additional paid-in capital	102,829,000	101,766,000	[1]
Accumulated deficit	(55,056,000)	(53,510,000)	[1]
Accumulated other comprehensive income (loss)	25,000	(49,000)	[1]
Stockholders Equity Excluding Treasury Stock Value	47,919,000	48,328,000	[1]
Treasury stock; 491,000 shares and 588,000 shares at cost at December 31, 2011 and September 30, 2012, respectively	(3,168,000)	(2,728,000)	[1]
Total stockholders' equity	44,751,000	45,600,000	[1]
Total liabilities and stockholders' equity	$ 63,335,000	$ 62,831,000	[1]

[1] Derived from audited balance sheet as of December 31, 2011