CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash Flows From Operating Activities:
Net loss	$ (18,831)	$ (3,335)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	6,336	6,366
Provision for doubtful accounts	109	120
Gain on cancelation of distributor rights agreement	(40)	0
Impairment of lasers placed-in-service	196	0
Impairment of intangible assets	523	0
Stock-based compensation	186	113
Deferred taxes	55	240
Loss on disposal of property and equipment	0	124
Loss on extinguishment of debentures	11,799	0
Amortization of debt discount	2,360	2,473
Amortization of deferred financing costs	188	200
Change in fair value of warrant liability	(102)	(5,396)
Changes in operating assets and liabilities:
Accounts receivable	184	558
Inventories	(193)	1,311
Prepaid expenses and other assets	475	224
Accounts payable	381	(2,605)
Other accrued liabilities	298	(169)
Other liabilities	159	36
Deferred revenues	57	62
Net cash provided by operating activities	4,140	322
Cash Flows From Investing Activities:
Lasers placed-in-service, net	(1,739)	(1,008)
Purchases of property and equipment, net	(320)	0
Payments on distributor rights liability	(135)	0
Restricted cash	0	15
Return of acquisition purchase price from escrow	0	125
Net cash used in investing activities	(2,194)	(868)
Cash Flows From Financing Activities:
Proceeds from long-term debt	0	1,500
Repayments of long-term debt	(1,429)	0
Payments on notes payable	(374)	(333)
Net cash (used in) provided by financing activities	(1,803)	1,167
Effect of exchange rate changes on cash	(2)	4
Net increase in cash and cash equivalents	141	625
Cash and cash equivalents, beginning of period	3,928	3,303
Cash and cash equivalents, end of period	4,069	3,928
Supplemental information:
Cash paid for interest	2,215	2,054
Cash paid for income taxes	28	15
Supplemental information of non-cash investing and financing activities:
Conversion of senior secured convertible debentures into common stock	262	265
Reclassification of warrant liability to stockholders' equity	0	1,541
Recognition of warrants issued with term note credit facility as debt discount	0	47
Prepaid insurance financed with notes payable	392	372
Acquisition of distributor rights asset for license liability	286	0
Issuance of convertible Preferred C stock in exchange for convertible debentures	$ 25,910	$ 0