Condensed Consolidated Statements of Cash Flows (USD $)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net loss	$ (4,329,000)	$ (3,713,000)
Adjustments to reconcile net loss to cash used in operating activities:
Bad debt expense	212,000	208,000
Proceeds from sale of New Jersey net operating loss carryforwards	662,000	390,000
Stock-based compensation expense	604,000	580,000
Depreciation and amortization	1,044,000	1,107,000
Deferred rent	(7,000)	21,000
Changes in:
Accounts receivable	1,103,000	219,000
Financing receivables	(546,000)	(814,000)
Inventory	(576,000)	(128,000)
Prepaid expenses and other assets	72,000	1,165,000
Deferred costs	(164,000)	(301,000)
Deferred revenue	1,133,000	1,294,000
Accounts payable and accrued expenses	291,000	(4,108,000)
Net cash used in operating activities	(501,000)	(4,080,000)
Cash flows from investing activities:
Expenditures for fixed assets including website development costs	(213,000)	(215,000)
Purchase of investments	(3,677,000)	(3,135,000)
Maturities of investments	6,267,000	3,943,000
Net cash provided by investing activities	2,377,000	593,000
Cash flows from financing activities:
Purchase of treasury shares	0	(183,000)
Proceeds from exercise of stock options	10,000	25,000
Net cash (used in) provided by financing activities	10,000	(158,000)
Effect of foreign exchange rate changes on cash and cash equivalents	(239,000)	(93,000)
Net (decrease) increase in cash and cash equivalents	1,647,000	(3,738,000)
Cash and cash equivalents - beginning of period	1,614,000	8,386,000
Cash and cash equivalents - end of period	3,261,000	4,648,000
Supplemental disclosure of cash flow information:
Taxes	0	0
Interest	0	0
Noncash activities:
Unrealized gain (loss) on investments	(98,000)	55,000
Shares withheld pursuant to stock issuance	$ 202,000	$ 247,000