Condensed Consolidated Balance Sheets - USD ($)		Sep. 30, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents		$ 626,420	$ 4,572,487
Accounts receivable, net		377,284	373,858
Inventory, net		468,374	543,747
Prepaid expenses and other current assets		533,411	292,918
Total current assets		2,005,489	5,783,010
Property and equipment, net		201,762	1,221,827
Finance lease right-of-use assets, net		1,096,472	0
Operating lease right-of-use assets		1,214,482	0
Goodwill		600,814	600,814
Intangible assets, net		884,504	1,085,366
Other noncurrent assets		426,629	259,346
Total assets		6,430,152	8,950,363
Current liabilities
Accounts payable		1,872,762	1,623,751
Accrued compensation and benefits		1,387,498	1,041,573
Accrued liabilities		1,040,562	902,019
Deferred revenue		9,808	15,824
Short-term notes payable		508,292	398,595
Short-term finance lease liabilities		627,620	399,345
Short-term operating lease liabilities		987,833	0
Total current liabilities		6,434,375	4,381,107
Deferred rent		0	162,919
Note payable		328,843	660,340
Warrant liability		0	67
Long-term finance lease liabilities		411,103	437,189
Long-term operating lease liabilities		812,801	0
Total liabilities		7,987,122	5,641,622
Commitments (Note 9)
Stockholders' equity (deficit)
Preferred stock, $0.01 par value; 10,000,000 shares authorized; none issued and outstanding at September 30, 2019 and December 31, 2018, respectively		0	0
Common stock, $0.01 par value; 50,000,000 shares authorized; 882,268 and 432,286 shares issued and outstanding at September 30, 2019 and December 31, 2018, respectively	[1]	8,823	4,323
Additional paid-in capital		170,449,216	165,396,036
Accumulated deficit		(172,007,090)	(162,078,525)
Accumulated other comprehensive loss		(7,919)	(13,093)
Total stockholders’ equity (deficit)		(1,556,970)	3,308,741
Total liabilities and stockholders’ equity (deficit)		$ 6,430,152	$ 8,950,363

[1] Reflects the 1-for-20 reverse stock split that became effective on August 29, 2019. Refer to Note 8 – Stockholders’ equity for further information.