Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 12,803,000	$ 14,491,000	[1]
Investments - short term	6,731,000	4,565,000	[1]
Interest receivable	70,000	53,000	[1]
Accounts receivable, net of allowance for doubtful accounts of $161,000 and $264,000 in 2010 and 2011, respectively	6,412,000	7,044,000	[1]
Notes and sales-type lease receivable - current	211,000	353,000	[1]
Inventory, net	8,420,000	7,295,000	[1]
Prepaid expenses and other current assets	1,110,000	1,211,000	[1]
Deferred costs - current	1,503,000	1,159,000	[1]
Total current assets	37,260,000	36,171,000	[1]
Investments - long term	8,486,000	9,364,000	[1]
Notes and sales-type lease receivable - less current portion	3,234,000	839,000	[1]
Deferred costs - less current portion	2,241,000	2,978,000	[1]
Fixed assets, net	3,147,000	3,853,000	[1]
Goodwill	1,837,000	1,837,000	[1]
Intangible assets, net	4,692,000	5,571,000	[1]
Other assets	307,000	272,000	[1]
Assets, Total	61,204,000	60,885,000	[1]
LIABILITIES
Accounts payable and accrued expenses	8,224,000	9,141,000	[1]
Deferred revenue	3,235,000	2,186,000	[1]
Total current liabilities	11,459,000	11,327,000	[1]
Deferred rent	289,000	199,000	[1]
Deferred revenue	4,053,000	4,614,000	[1]
Liabilities, Total	15,801,000	16,140,000	[1]
Commitments and Contingencies (Note 22)
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; 12,491,000 and 12,546,000 shares issued at December 31, 2010 and September 30, 2011, respectively; shares outstanding, 11,242,000 and 12,055,000 at December 31, 2010 and September 30, 2011, respectively	121,000	121,000	[1]
Additional paid-in capital	101,489,000	105,156,000	[1]
Accumulated deficit	(53,492,000)	(49,470,000)	[1]
Accumulated other comprehensive (loss) income	13,000	(37,000)	[1]
Stockholders Equity Excluding Treasury Stock Value	48,131,000	55,770,000	[1]
Treasury stock; 1,249,000 shares and 491,000 shares at cost at December 31, 2010 and September 30, 2011, respectively	(2,728,000)	(11,025,000)	[1]
Total stockholders' equity	45,403,000	44,745,000	[1]
Total liabilities and stockholders' equity	$ 61,204,000	$ 60,885,000	[1]

[1] Derived from audited balance sheet as of December 31, 2010