Condensed Consolidated Balance Sheets - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 7,428,993	$ 1,847,171
Accounts receivable, net	516,472	809,540
Inventory, net	614,423	533,425
Prepaid expenses and other current assets	525,484	311,644
Total current assets	9,085,372	3,501,780
Property and equipment, net	932,215	835,537
Goodwill	600,814	600,814
Intangible assets, net	1,219,274	1,353,182
Other noncurrent assets	289,032	328,601
Total assets	12,126,707	6,619,914
Current liabilities
Accounts payable	1,283,469	1,691,712
Accrued compensation and benefits	868,802	746,924
Accrued liabilities	1,377,055	1,160,714
Deferred revenue	14,122	24,442
Short-term notes payable	476,567	1,010,961
Current maturities of long-term capital lease obligations	248,305	154,839
Total current liabilities	4,268,320	4,789,592
Deferred rent	230,122	290,719
Note payable	825,911
Warrant liability	298	8,453
Long-term capital lease obligations and other noncurrent liabilities	403,291	130,153
Total liabilities	5,727,942	5,218,917
Commitments (Note 9)
Stockholders’ equity
Common stock, $0.01 par value; 50,000,000 shares authorized; 6,067,039 and 2,265,320 shares issued and outstanding at June 30, 2018 and December 31, 2017, respectively	60,670	22,653
Preferred stock, $0.01 par value; 10,000,000 shares authorized; none issued and outstanding at June 30, 2018 and December 31, 2017, respectively	0	0
Additional paid-in capital	161,449,185	150,114,671
Accumulated other comprehensive loss	(20,366)	(25,900)
Accumulated deficit	(155,090,724)	(148,710,427)
Total stockholders’ equity	6,398,765	1,400,997
Total liabilities and stockholders’ equity	$ 12,126,707	$ 6,619,914