Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Operating activities:
Net loss	$ (70,099)	$ (52,411)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	6,590	8,409
Loss on goodwill and intangible impairment and disposal of fixed assets	48,249	21,242
Non-cash interest	9,848	14,685
Loss on sale of fixed assets		10
Non-cash consulting expense/stock option expense	694	212
Provision for losses on accounts receivable and inventory	5,120	4,213
Change in warrant derivative liability	(121)	(203)
Changes in operating assets and liabilities:
Trade accounts receivable	2,536	4,747
Inventories	40	2,122
Prepaid and other assets	1,055	(460)
Accounts payable	(3,011)	(1,637)
Accrued liabilities	311	(1,472)
Net cash provided by (used in) operating activities	1,212	(543)
Investing activities:
Purchases of property and equipment and intangible assets	(624)	(1,641)
Proceeds from sale of fixed assets	257	33
Net cash used in investing activities	(367)	(1,608)
Financing activities:
Proceeds from long-term and convertible debt, net of deferred and financing costs		12,787
Payments on capital leases	(359)	(88)
Net payments on the revolving line of credit		(10,448)
Costs associated with conversion of debt and private placement	(3,356)
Proceeds from equity private placement	6,810
Net proceeds from issuance of stock and warrants	1	178
Net cash provided by financing activities	3,096	2,429
Net change in cash and cash equivalents	3,941	278
Cash and cash equivalents at beginning of year	2,856	2,578
Cash and cash equivalents at end of year	$ 6,797	$ 2,856