CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash Flows From Operating Activities:
Net loss	$ (3,275)	$ (4,318)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	3,437	4,143
Amortization of right-of-use asset	240	0
Provision for doubtful accounts	9	53
Loss on disposal of property and equipment and lasers placed in service	29	503
Gain on intangible assets from cancellation of distributor rights agreement	0	(11)
Stock-based compensation	883	570
Deferred taxes	(111)	(22)
Amortization of debt discount	43	44
Amortization of deferred financing costs	64	79
Change in fair value of warrant liability	0	101
Changes in operating assets and liabilities:
Accounts receivable	(261)	361
Inventories	(792)	521
Prepaid expenses and other assets	76	(137)
Accounts payable	233	(614)
Other accrued liabilities	437	754
Other liabilities	(61)	(3)
Operating lease liabilities	(219)	0
Deferred revenues	384	(229)
Net cash provided by (used in) operating activities	1,116	1,795
Cash Flows From Investing Activities:
Lasers placed-in-service	(1,370)	(1,254)
Purchases of property and equipment	(5)	(6)
Payments on distributor rights liability	0	(23)
Net cash used in investing activities	(1,375)	(1,283)
Cash Flows From Financing Activities:
Proceeds from issuance of common stock, net	0	14,664
Repayments of long-term debt	0	(3,000)
Payments on notes payable	0	(357)
Net cash provided by financing activities	0	11,307
Net (decrease) increase in cash and cash equivalents	(259)	11,819
Cash and cash equivalents, beginning of period	16,487	4,069
Cash and cash equivalents, end of period	16,228	15,888
Supplemental information of cash and non-cash transactions:
Cash paid for interest	604	808
Supplemental information of non-cash investing and financing activities:
Lease liabilities arising from obtaining right-of-use assets	$ 1,632	$ 0