Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 7,097	$ 6,797
Trade accounts receivable, net of allowance for doubtful accounts of $2,161 and $2,140, respectively	9,493	9,990
Inventories, net	16,526	17,301
Prepaid and other current assets	464	589
Total current assets	33,580	34,677
Property and equipment, net	6,382	7,174
Right-of-use asset, net	2,568
Goodwill	3,205	3,205
Intangible assets, net	558	573
Other assets	772	793
Total Assets	47,065	46,422
Current Liabilities:
Accounts payable	6,036	6,465
Accrued liabilities	4,429	5,150
Warrant derivative liability	25	10
Current portion of lease liability	374
Current portion of financing lease obligations	388	426
Total current liabilities	11,252	12,051
Long-term Liabilities:
Lease liability, less current portion	2,194
Financing lease obligation, less current portion	138	204
Long-term debt, less issuance costs	72,657	77,939
Total Liabilities	86,241	90,194
Commitments and Contingencies (note 10)
Stockholders' Equity (Deficit):
Preferred stock, $0.000001 par value; 10,000,000 shares authorized; no shares issued and outstanding
Common stock, $0.000001 par value; 50,000,000 shares authorized; 13,161,762 shares issued and outstanding as of March 31, 2019 and 13,172,179 shares issued and outstanding as of December 31, 2018
Additional paid-in capital	178,668	171,273
Accumulated deficit	(217,844)	(215,045)
Total Stockholders' Equity (Deficit)	(39,176)	(43,772)
Total Liabilities & Stockholders' Equity (Deficit)	$ 47,065	$ 46,422