Consolidated Balance Sheets - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash	$ 2,051,800	$ 4,188,623
Restricted cash	6,180	256,005
Accounts receivable,net of $50,000 allowance for doubtful accounts	1,917,576	2,025,284
Inventory	1,942,575	1,651,246
Prepaid expenses and other current assets	309,755	261,324
Total current assets	6,227,886	8,382,482
Property, plant and equipment, net	4,736,113	4,805,640
Investment	484,930	484,930
Other assets	90,320	83,376
Goodwill	2,453,597	2,453,597
Other intangible assets, net	842,385	1,220,752
Total assets	14,835,231	17,430,777
Current liabilities:
Accounts payable	1,491,058	728,652
Accrued expenses and deferred revenue	831,689	1,105,718
Other current liabilities	2,295,681	2,953,629
Short-term debt		3,645,760
Current portion of long-term debt, net	796,734	966,506
Total current liabilities	5,415,162	9,400,265
Long-term debt, net	1,354,264	1,734,171
Other long-term liabilities	582,653	1,384,500
Deferred tax liability, net	125,982	125,982
Commitments and contingencies (Note 8)
Stockholders' equity
Common stock, $.02 par value; 200,000,000 shares authorized, 16,813,613 shares issued and outstanding (16,599,327 on December 31, 2017)	336,272	331,987
Additional paid-in capital	107,024,040	106,633,708
Subscription receivable, net		(300,000)
Accumulated other comprehensive loss	(5,675)	(23,069)
Accumulated deficit	(99,997,467)	(101,856,767)
Total stockholders' equity	7,357,170	4,785,859
Total liabilities and stockholders' equity	$ 14,835,231	$ 17,430,777