CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash Flows From Operating Activities:
Net loss	$ (2,415)	$ (3,710)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	2,347	2,841
Amortization of right-of-use asset	147	0
Provision for doubtful accounts	2	(49)
Loss on disposal of property and equipment and lasers placed in service	22	411
Gain on cancellation of distributor rights agreement	0	(11)
Stock-based compensation	626	203
Deferred taxes	(89)	80
Amortization of debt discount	12	39
Amortization of deferred financing costs	57	42
Change in fair value of warrant liability	0	22
Changes in operating assets and liabilities:
Accounts receivable	(85)	710
Inventories	(813)	596
Prepaid expenses and other assets	(42)	(296)
Accounts payable	327	(895)
Other accrued liabilities	248	(3)
Other liabilities	(5)	255
Operating lease liabilities	(126)
Deferred revenues	193	(303)
Net cash provided by (used in) operating activities	406	(68)
Cash Flows From Investing Activities:
Lasers placed-in-service	(947)	(885)
Purchases of property and equipment	(5)	(6)
Payments on distributor rights liability	0	(23)
Net cash used in investing activities	(952)	(914)
Cash Flows From Financing Activities:
Proceeds from issuance of common stock, net	0	14,664
Repayments of long-term debt		(3,000)
Payments on notes payable	0	(306)
Net cash provided by financing activities	0	11,358
Net (decrease) increase in cash and cash equivalents	(546)	10,376
Cash and cash equivalents, beginning of period	16,487	4,069
Cash and cash equivalents, end of period	15,941	14,445
Supplemental information of cash and non-cash transactions:
Cash paid for interest	404	691
Lease liabilities arising from obtaining right-of-use assets	$ 1,632	$ 0