Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2015		Jun. 30, 2014
Cash flows from operating activities:
Net loss	$ (7,087,000)		$ (4,536,000)
Adjustments to reconcile net loss to cash used in operating activities:
Bad debt expense	350,000		367,000
Proceeds from sale of New Jersey net operating loss carryforwards	0		63,000
Stock-based compensation expense	767,000		632,000
Depreciation and amortization	394,000		1,114,000
Inventory reserve	154,000		40,000
Other non-cash items	20,000		13,000
Changes in:
Accounts receivable	1,809,000		(974,000)
Financing receivables	609,000		1,207,000
Inventory	(2,638,000)		384,000
Prepaid expenses and other assets	(226,000)		(256,000)
Deferred costs	(243,000)		(55,000)
Deferred revenue	(752,000)		1,129,000
Accounts payable and accrued expenses	(212,000)		1,671,000
Net cash provided by (used in) operating activities	(7,055,000)		799,000
Cash flows from investing activities:
Expenditures for fixed assets including website development costs	(1,477,000)		(284,000)
Purchase of investments	(2,064,000)		(3,956,000)
Proceeds from the sale and maturities of investments	6,110,000		3,921,000
Net cash (used in) provided by investing activities	2,569,000		(319,000)
Cash flows from financing activities:
Principal payments of capital lease obligation	(79,000)		(69,000)
Proceeds from exercise of stock options	1,896,000		58,000
Net cash (used in) provided by financing activities	1,817,000		(11,000)
Effect of foreign exchange rate changes on cash and cash equivalents	38,000		58,000
Net increase (decrease) in cash and cash equivalents	(2,631,000)		527,000
Cash and cash equivalents - beginning of period	5,974,000	[1]	6,582,000
Cash and cash equivalents - end of period	3,343,000		7,109,000
Supplemental disclosure of cash flow information:
Taxes	0		0
Interest	9,000		17,000
Noncash activities:
Unrealized gain on investments	12,000		10,000
Shares withheld pursuant to stock issuance	$ 351,000		$ 137,000

[1] Derived from audited balance sheet as of December 31, 2014.