Consolidated Balance Sheets (Unaudited) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 5,321,344	$ 2,317,659
Restricted cash	50,266	130,326
Accounts receivable, net of $50,000 allowance for doubtful accounts	2,564,178	2,217,877
Inventory	1,272,111	1,563,593
Prepaid expenses and other current assets	256,048	285,580
Total current assets	9,463,947	6,515,035
Property, plant and equipment, net	4,854,786	5,014,494
Investment	324,930	324,930
Other assets	90,319	90,319
Right-of-use assets	1,313,742
Goodwill	2,453,597	2,453,597
Other intangible assets, net	1,166,310	881,411
Total assets	19,667,631	15,279,786
Current liabilities:
Accounts payable	1,563,986	1,347,491
Accrued expenses and deferred revenue	818,773	1,106,346
Other current liabilities	1,473,163	2,255,942
Current portion of long-term debt, net	348,574	713,427
Current portion of lease liability	332,883
Total current liabilities	4,537,379	5,423,206
Long-term debt, net	1,965,829	1,721,936
Lease liability	1,005,222
Other long-term liabilities	329,348	391,325
Deferred tax liability, net	168,986	168,986
Commitments and contingencies (Note 10)
Stockholders' equity:
Common stock, $.02 par value; 200,000,000 shares authorized, 29,202,721 shares issued and outstanding (17,425,858 on December 31, 2018)	584,054	348,517
Additional paid-in capital	112,972,366	107,624,666
Accumulated other comprehensive loss	(22,483)	(7,052)
Accumulated deficit	(101,873,070)	(100,391,798)
Total stockholders' equity	11,660,867	7,574,333
Total liabilities and stockholders' equity	$ 19,667,631	$ 15,279,786