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	$ (13,326)	$ (10,697)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization	947	1,341
Amortization of debt discount	1,797	1,004
Issuance of common stock for services		352
Stock-based compensation		172
Recovery for provision for obsolete inventories	(490)	(987)
Provision for (recovery for) losses on accounts receivable	1,381	(165)
Loss (gain) on change in derivative liability	2,315	(388)
Loss on disposal of property and equipment	386
Other non-cash items	(69)	(82)
Changes in operating assets and liabilities:
Accounts receivable, net	(1,769)	(3,225)
Inventories	(431)	5,982
Prepaid expenses and other current assets	(1,572)	(370)
Other assets	39	24
Accounts payable	(579)	(242)
Accrued expenses and other current liabilities	2,906	3,145
Net cash used in operating activities	(8,465)	(4,136)
Cash flows from investing activities:
Purchase of property and equipment	(20)	(57)
Cash flows from financing activities:
Proceeds from the issuance of debt		4,000
Repayment of debt	(208)	(835)
Net borrowings from revolving credit facility	4,567	287
Net cash provided by financing activities	4,359	3,452
Net decrease in cash	(4,126)	(741)
Cash at the beginning of the period	6,227	1,350
Cash at the end of the period	2,101	609
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid for interest	913	1,557
SUPPLEMENTAL SCHEDULE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Issuance of common stock for prepaid expenses		648
Reclassification of derivative liabilities	$ 628