Condensed Consolidated Balance Sheets - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 6,011,508	$ 4,572,487
Accounts receivable, net	813,260	373,858
Inventory, net	498,852	543,747
Prepaid expenses and other current assets	162,178	292,918
Total current assets	7,485,798	5,783,010
Property and equipment, net	248,167	1,221,827
Finance lease right-of-use assets, net	961,418	0
Operating lease right-of-use assets	1,546,155	0
Goodwill	600,814	600,814
Intangible assets, net	1,018,412	1,085,366
Other noncurrent assets	230,310	259,346
Total assets	12,091,074	8,950,363
Current liabilities
Accounts payable	1,528,814	1,623,751
Accrued compensation and benefits	1,223,083	1,041,573
Accrued liabilities	950,156	902,019
Deferred revenue	9,993	15,824
Short-term notes payable	347,778	398,595
Short-term finance lease liabilities	492,300	399,345
Short-term operating lease liabilities	930,887	0
Total current liabilities	5,483,011	4,381,107
Deferred rent	0	162,919
Note payable	494,285	660,340
Warrant liability	0	67
Long-term finance lease liabilities	452,089	437,189
Long-term operating lease liabilities	1,322,696	0
Total liabilities	7,752,081	5,641,622
Commitments (Note 9)
Stockholders' equity
Common stock, $0.01 par value; 50,000,000 shares authorized; 17,645,720 and 8,645,720 shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively	176,457	86,457
Preferred stock, $0.01 par value; 10,000,000 shares authorized; none issued and outstanding at March 31, 2019 and December 31, 2018, respectively	0	0
Additional paid-in capital	170,104,444	165,313,902
Accumulated other comprehensive loss	(10,267)	(13,093)
Accumulated deficit	(165,931,641)	(162,078,525)
Total stockholders’ equity	4,338,993	3,308,741
Total liabilities and stockholders’ equity	$ 12,091,074	$ 8,950,363