Condensed Consolidated Balance Sheets - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 4,854,031	$ 4,117,324
Accounts receivable, net	469,954	542,420
Inventory, net	461,129	692,368
Prepaid expenses and other current assets	340,923	329,646
Total current assets	6,126,037	5,681,758
Property and equipment, net	750,090	800,723
Goodwill	600,814	600,814
Intangible assets, net	1,420,136	1,620,998
Other noncurrent assets	321,592	279,752
Total assets	9,218,669	8,984,045
Current liabilities
Accounts payable	1,939,175	2,232,563
Accrued compensation and benefits	902,892	578,480
Accrued liabilities	857,024	1,215,283
Deferred revenue	31,239	37,397
Short-term notes payable	1,100,012	1,023,815
Current maturities of long-term capital lease obligation	160,485	184,399
Total current liabilities	4,990,827	5,271,937
Deferred rent	319,273	398,084
Warrant liability	28,378	0
Long-term capital lease obligation and other noncurrent liabilities	119,764	146,543
Total liabilities	5,458,242	5,816,564
Commitments (Note 8)
Stockholders' equity
Common stock, $0.01 par value; 200,000,000 shares authorized; 51,964,878 and 25,304,270 shares issued and outstanding at September 30, 2017 and December 31, 2016, respectively	519,648	253,042
Preferred stock, $0.01 par value; 10,000,000 shares authorized; none issued and outstanding at September 30, 2017 and December 31, 2016, respectively	0	0
Additional paid-in capital	148,994,194	136,199,382
Accumulated other comprehensive (loss)/income	(7,649)	6,176
Accumulated deficit	(145,745,766)	(133,291,119)
Total stockholders’ equity	3,760,427	3,167,481
Total liabilities and stockholders’ equity	$ 9,218,669	$ 8,984,045