Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Operating activities
Net income (loss)	$ (1,224,667)	$ 724,569
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	1,003,096	961,731
Stock-based compensation	63,064	46,370
Non-cash life insurance policy accretion	(100,288)	(91,932)
Deferred income taxes	92,000	(615,000)
Foreign currency transaction (gain)/loss	109,491	136,999
(Increase) decrease in accounts receivable and accounts due from employees and distributors	156,865	(117,064)
(Increase) decrease in inventories	(138,490)	(76,392)
(Increase) decrease in refundable income taxes	(264,243)	(257,533)
(Increase) decrease in prepaid expenses and other current assets	95,861	28,130
(Increase) decrease in other assets	10,776	(18,159)
Increase (decrease) in income taxes payable	0	(199,558)
Increase (decrease) in accounts payable & accrued expenses and other non-current liabilities	(603,020)	(913,885)
Net cash used in operating activities	(799,555)	(391,724)
Investing activities
Proceeds from sale of property, plant, and equipment	7,281	1,186
Purchase of property, plant, and equipment	(250,284)	(909,403)
Payments received on distributor note receivable	96,845	91,219
Payment of life insurance premiums	0	(252,250)
Net cash used in investing activities	(146,158)	(1,069,248)
Financing activities
Proceeds from revolving line of credit borrowings	0	500,000
Repayment of revolving line of credit borrowings	(500,000)	0
Proceeds from long-term borrowings	3,249,501	0
Principal payments on long-term borrowings	(3,482,561)	(633,257)
Net cash used in financing activities	(733,060)	(133,257)
Effect of exchange rate changes on cash and cash equivalents	(48,356)	(73,177)
Increase (decrease) in cash and cash equivalents	(1,727,129)	(1,667,406)
Cash and cash equivalents at beginning of year	4,989,392	6,656,798
Cash and cash equivalents at end of year	3,262,263	4,989,392
Supplemental disclosures of cash flow information:
Cash paid during the year for: Interest	87,710	82,768
Cash paid during the year for: Income taxes paid (received), net	(68,000)	320,000
Noncash financing transactions (Note 13):
Issuance of promissory notes	424,000	0
Issuance of company common stock	$ 117,000	$ 0