Consolidated Balance Sheets - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash	$ 5,871,738	$ 1,440,256
Restricted cash	177,609	293,043
Accounts receivable, net	1,890,981	2,097,433
Inventory	1,206,377	937,830
Prepaid expenses and other current assets	350,289	313,528
Total current assets	9,496,994	5,082,090
Property, plant and equipment, net	4,573,841	5,003,818
Other assets	45,821	44,050
Goodwill	15,285,123	15,285,123
Other intangible assets, net	1,896,018	3,017,544
Total assets	18,466,023	15,600,851
Current liabilities:
Accounts payable	2,212,653	1,945,073
Accrued expenses and deferred revenue	1,290,593	955,066
Other current liabilities	2,996,310	1,009,660
Short-term debt		3,984,316
Current portion of long-term debt, net	1,202,335	1,553,061
Total current liabilities	7,701,891	9,447,176
Long-term debt, net	5,249,569	2,240,596
Other long-term liabilities	2,184,843	63,697
Deferred tax liability, net	45,619	162,107
Commitments and contingencies (Note 11)
Stockholders' equity
Common stock, $.02 par value; 200,000,000 shares authorized, 13,502,653 shares issued and outstanding (12,970,487 on December 31, 2015)	270,053	259,410
Additional paid-in capital	104,338,002	103,820,170
Accumulated other comprehensive loss	(45,343)	(63,697)
Accumulated deficit	(101,278,611)	(100,328,608)
Total stockholders' equity	3,284,101	3,687,275
Total liabilities and stockholders' equity	$ 18,466,023	$ 15,600,851