Condensed Consolidated Balance Sheets - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 211,683	$ 4,117,324
Accounts receivable, net	411,762	542,420
Inventory, net	578,903	692,368
Prepaid expenses and other current assets	423,477	329,646
Total current assets	1,625,825	5,681,758
Property and equipment, net	784,333	800,723
Deferred offering costs	179,150	0
Goodwill	600,814	600,814
Intangible assets, net	1,487,090	1,620,998
Other noncurrent assets	313,828	279,752
Total assets	4,991,040	8,984,045
Current liabilities
Accounts payable	2,907,190	2,232,563
Accrued compensation and benefits	798,069	578,480
Accrued liabilities	972,632	1,215,283
Deferred revenue	37,760	37,397
Short-term notes payable	629,702	1,023,815
Current maturities of long-term capital lease obligation	168,831	184,399
Total current liabilities	5,514,184	5,271,937
Deferred rent	347,648	398,084
Warrant liability	89,291	0
Note payable	904,475	0
Long-term capital lease obligation and other noncurrent liabilities	273,208	146,543
Total liabilities	7,128,806	5,816,564
Commitments (Note 8)
Stockholders' (deficit) equity
Common stock, $0.01 par value; 200,000,000 shares authorized; 29,365,741 and 25,304,270 shares issued and outstanding at June 30, 2017 and December 31, 2016, respectively	293,657	253,042
Preferred stock, $0.01 par value; 10,000,000 shares authorized; none issued and outstanding at June 30, 2017 and December 31, 2016, respectively	0	0
Additional paid-in capital	140,047,090	136,199,382
Accumulated other comprehensive (loss)/income	(1,415)	6,176
Accumulated deficit	(142,477,098)	(133,291,119)
Total stockholders’ (deficit) equity	(2,137,766)	3,167,481
Total liabilities and stockholders’ (deficit) equity	$ 4,991,040	$ 8,984,045