STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net loss	$ (14,145)	$ (25,948)
Adjustments to reconcile net loss:
Write-off of unamortized loan costs	0	983
Depreciation and amortization	1,790	2,439
Impairment of long-lived assets	0	1,011
Bad debt expense	52	46
Write-off of unamortized financing costs	0	41
Share-based compensation expense	413	1,301
Amortization of deferred financing costs	191	250
Amortization of debt discount	1,943	0
Change in fair value of warrant liability	(8,103)	296
Inventory reserve	1,084	325
Gain on sale of fixed assets	(16)	0
Changes in operating assets and liabilities:
Accounts receivable	(215)	77
Inventory	(784)	121
Prepaid expenses and other current assets	606	86
Other assets	0	36
Accounts payable and accrued expenses	(241)	(484)
Other current liabilities	(6)	27
Deferred rent	(40)	(24)
Deferred revenue	(238)	4
Net cash used in operating activities	(17,709)	(19,413)
Cash flows from investing activities:
Purchases of property and equipment	0	(5,188)
Proceeds from the sale of fixed assets	17	0
Net cash provided by (used in) investing activities	17	(5,188)
Cash flows from financing activities:
Net proceeds from private placements/public offerings	11,458	21,174
Proceeds from long-term debt	15,000	6,000
Expenses related to long-term debt	(1,012)	(245)
Expenses related to issuance of Series B convertible preferred stock	(103)	0
Repayment of long-term debt	0	(6,425)
Proceeds from exercise of stock options	0	18
Net cash provided by financing activities	25,343	20,522
Net increase (decrease) in cash and cash equivalents	7,651	(4,079)
Cash and cash equivalents at beginning of period	3,783	7,862
Cash and cash equivalents at end of period	11,434	3,783
Supplemental Disclosure of Cash Flow Information:
Cash paid for interest	116	0
Supplemental Disclosure of Non-cash Investing and Financing Activities:
Conversion of convertible preferred stock into common stock	513	0
Conversion of senior secured convertible debentures into common stock	1,589	0
Recognition of debt discount on senior secured convertible debentures	5,788	0
Recognition of beneficial conversion feature on senior secured convertible debentures	4,565	0
Exchange of series A convertible preferred stock for series B convertible preferred stock	12,300	0
Reclassification of warrant liability to stockholders equity	0	652
Reclassification of MelaFind components between property and equipment and inventory	$ 0	$ 5,402