CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash Flows From Operating Activities:
Net loss	$ (3,335)	$ (24,947)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	6,366	4,051
Provision for doubtful accounts	120	20
Stock-based compensation	113	1,753
Deferred tax provision	240	119
Loss on disposal of property and equipment	124	0
Impairment of long-lived assets	0	920
Amortization of debt discount	2,473	8,479
Amortization of deferred financing costs	200	391
Inventory write-offs	0	4,818
Gain on the change in fair value of the warrant liability	(5,396)	(1,814)
Changes in operating assets and liabilities:
Accounts receivable	558	(186)
Inventories	1,311	(508)
Prepaid expenses and other assets	224	(139)
Accounts payable and accrued expenses	(2,605)	542
Other accrued liabilities	(169)	92
Other liabilities	36	(80)
Deferred revenues	62	(81)
Net cash provided by (used in) operating activities	322	(6,570)
Cash Flows From Investing Activities:
Payment for Lasers placed-in-service, net	(1,008)	(1,689)
Purchases of property and equipment	0	(35)
Restricted cash	15	(15)
Acquisition costs, net of cash received	125	(42,500)
Net cash used in investing activities	(868)	(44,239)
Cash Flows From Financing Activities:
Proceeds from convertible debentures	0	32,500
Repayment of convertible debentures	0	(103)
Proceeds from senior notes	0	10,000
Repayment of senior notes	0	(10,000)
Proceeds from long-term debt	1,500	10,500
Payments on notes payable	(333)	(93)
Registration costs	0	(134)
Net cash provided by financing activities	1,167	42,670
Effect of exchange rate changes on cash	4	8
Net increase (decrease) in cash and cash equivalents	625	(8,131)
Cash and cash equivalents, beginning of period	3,303	11,434
Cash and cash equivalents, end of period	3,928	3,303
Supplemental information:
Cash paid for interest	2,054	1,188
Supplemental information of non-cash investing and financing activities:
Modification of warrants recorded as a deemed dividend	0	2,962
Conversion of senior secured convertible debentures into common stock	265	4,815
Reclassification of property and equipment to inventory, net	0	107
Reclassification of warrants to equity	1,541	(5,399)
Recognition of debt discount and beneficial conversion feature on long-term debt	0	27,300
Recognition of warrants issued with term note credit facility as debt discount	47	321
Prepaid insurance financed with notes payable	372	334
Recognition of warrants issued in connection with financings	$ 0	$ 2,958