Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net loss	$ (540,802)	$ (15,926)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	246,841	221,559
Deferred income taxes	$ (6,020)	(9,012)
Loss on sale of property, plant and equipment		12,522
Other operating non-cash items	$ (2,366)	23,874
Changes in assets and liabilities:
Trade accounts receivable	1,012,558	1,374,194
Inventories	(1,154,606)	(2,001,274)
Prepaid expenses and other current assets	(212,849)	(219,163)
Receivables due from affiliated companies	(17,339)	(332,708)
Accounts payable and other accrued expenses	812,461	340,462
Net cash provided by (used in) operating activities	137,878	(605,472)
Cash flows from investing activities:
Purchases of property, plant and equipment	$ (76,494)	(370,795)
Sale of property, plant, and equipment		55,000
Net cash used in investing activities	$ (76,494)	(315,795)
Cash flows from financing activities:
Payments on long-term debt	(112,866)	$ (105,343)
Proceeds from exercise of stock options	21,600
Net cash used in financing activities	(91,266)	$ (105,343)
Effect of exchange rates on cash	(2,455)	(24,560)
Net decrease in cash	(32,337)	(1,051,170)
Cash at beginning of period	2,468,415	3,062,729
Cash at end of period	2,436,078	2,011,559
Supplemental disclosure of cash flow information:
Cash paid for interest during period	$ 6,199	10,379
Cash paid for income taxes during period		$ 87,000