CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash Flows From Operating Activities:
Net loss	$ (2,715)	$ (2,415)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	1,986	2,347
Amortization of right-of-use assets	159	147
Provision for doubtful accounts	72	2
Loss on disposal of property and equipment and lasers placed in service	19	22
Stock-based compensation	840	626
Deferred taxes	135	(89)
Amortization of debt discount	0	12
Amortization of deferred financing costs	0	57
Changes in operating assets and liabilities:
Accounts receivable	2,953	(85)
Inventories	(443)	(813)
Prepaid expenses and other assets	116	(42)
Accounts payable	571	327
Other accrued liabilities	(431)	248
Other liabilities	(107)	(5)
Operating lease liabilities	(142)	(126)
Deferred revenues	(1,812)	193
Net cash provided by operating activities	1,201	406
Cash Flows From Investing Activities:
Lasers placed-in-service	(730)	(947)
Purchases of property and equipment	0	(5)
Net cash used in investing activities	(730)	(952)
Cash Flows From Financing Activities:
Proceeds from note payable and long-term debt	2,528	0
Net cash provided by financing activities	2,528	0
Net increase (decrease) in cash and cash equivalents and restricted cash	2,999	(546)
Cash, cash equivalents and restricted cash, beginning of period	15,629	16,487
Cash, cash equivalents and restricted cash, end of period	18,628	15,941
Cash and cash equivalents	11,231	15,941
Restricted cash	7,397	0
Supplemental information of cash and non-cash transactions:
Cash paid for interest	103	404
Lease liabilities arising from obtaining right-of-use assets	$ 0	$ 1,632