Consolidated Balance Sheets (Unaudited) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash	$ 3,728,086	$ 4,188,623
Restricted cash	555,831	256,005
Accounts receivable, net of $50,000 allowance for doubtful accounts	1,999,595	2,025,284
Inventory	1,599,547	1,651,246
Prepaid expenses and other current assets	247,996	261,324
Total current assets	8,131,055	8,382,482
Property, plant and equipment, net	4,762,554	4,805,640
Investment	484,930	484,930
Other assets	83,376	83,376
Goodwill	2,453,597	2,453,597
Other intangible assets, net	1,066,888	1,220,752
Total assets	16,982,400	17,430,777
Current liabilities:
Accounts payable	917,451	728,652
Accrued expenses and deferred revenue	1,004,025	1,105,718
Other current liabilities	2,933,591	2,953,629
Short-term debt	3,714,129	3,645,760
Current portion of long-term debt, net	806,202	966,506
Total current liabilities	9,375,398	9,400,265
Long-term debt, net	1,659,291	1,734,171
Other long-term liabilities	1,137,821	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, 16,599,327 shares issued and outstanding (16,599,327 on December 31, 2017)	331,987	331,987
Additional paid-in capital	106,622,960	106,633,708
Subscription receivable		(300,000)
Accumulated other comprehensive loss	(8,180)	(23,069)
Accumulated deficit	(102,262,859)	(101,856,767)
Total stockholders’ equity	4,683,908	4,785,859
Total liabilities and stockholders’ equity	$ 16,982,400	$ 17,430,777

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.