CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash Flows From Operating Activities:
Net loss	$ (2,223)	$ (2,235)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	1,413	1,543
Loss on disposal of property and equipment	182	0
Impairment of intangible asset	226	0
Stock-based compensation	19	52
Deferred tax provision	40	60
Amortization of debt discount	19	723
Amortization of deferred financing costs	20	54
Change in fair value of warrant liability	(1)	132
Changes in operating assets and liabilities:
Accounts receivable	650	102
Inventories	(20)	147
Prepaid expenses and other assets	(669)	(188)
Accounts payable	381	354
Other accrued liabilities	(119)	(61)
Other liabilities	227	36
Deferred revenues	(85)	99
Net cash provided by operating activities	60	818
Cash Flows From Investing Activities:
Lasers placed-in-service, net	(375)	(683)
Purchases of property and equipment, net	(6)	(200)
Payments on distributor rights liability	(24)	0
Net cash used in investing activities	(405)	(883)
Cash Flows From Financing Activities:
Advance fees related to equity offering	(202)	0
Payments on notes payable	(105)	(100)
Net cash used in financing activities	(307)	(100)
Net decrease in cash and cash equivalents	(652)	(165)
Cash and cash equivalents, beginning of period	4,069	3,928
Cash and cash equivalents, end of period	3,417	3,763
Supplemental information:
Cash paid for interest	276	540
Supplemental information of non-cash investing and financing activities:
Conversion of senior secured convertible debentures into common stock	0	56
Acquisition of distributor rights asset for license liability	$ 0	$ 900