CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash Flows From Operating Activities:
Net loss	$ (1,333)	$ (2,081)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	1,204	1,463
Amortization of right of use asset	93	0
Provision for doubtful accounts	(7)	0
Loss on disposal of property and equipment and lasers placed in service	22	182
Loss on intangible assets from cancellation of distributor rights agreements	0	226
Stock-based compensation	323	19
Deferred taxes	(42)	40
Amortization of debt discount	7	19
Amortization of deferred financing costs	27	20
Change in fair value of warrant liability	0	(1)
Changes in operating assets and liabilities:
Accounts receivable	(175)	650
Inventories	(327)	(20)
Prepaid expenses and other assets	142	(669)
Accounts payable	281	381
Other accrued liabilities	224	(16)
Other liabilities	9	227
Operating lease liabilities	(76)	0
Deferred revenues	(36)	(380)
Net cash provided by operating activities	336	60
Cash Flows From Investing Activities:
Lasers placed-in-service	(434)	(375)
Purchases of property and equipment	0	(6)
Payments on distributor rights liability	0	(24)
Net cash used in investing activities	(434)	(405)
Cash Flows From Financing Activities:
Advance fees related to equity financing	0	(202)
Payments on notes payable	0	(105)
Net cash used in financing activities	0	(307)
Net decrease in cash and cash equivalents	(98)	(652)
Cash and cash equivalents, beginning of period	16,487	4,069
Cash and cash equivalents, end of period	16,389	3,417
Supplemental information of cash and non-cash transactions:
Cash paid for interest	201	276
Lease liabilities arising from obtaining right-of-use assets	$ 848	$ 0