Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Operating activities:
Net loss	$ (1,031,824)	$ (729,549)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	498,415	514,309
Stock-based compensation	35,112	28,898
Non-cash life insurance policy accretion	(58,488)	(50,144)
Deferred income taxes	14,000	(62,000)
Foreign currency transaction (gain)/loss	(162,293)	104,778
(Increase) decrease in accounts receivable and accounts due from employees and distributors	72,102	186,972
(Increase) decrease in inventories	590,841	(324,809)
(Increase) decrease in refundable income taxes	53,474	(82,146)
(Increase) decrease in prepaid expenses and other current assets	(341,478)	(260,788)
(Increase) decrease in other assets	11,840	(26,460)
Increase (decrease) in accounts payable & accrued expenses and other noncurrent liabilities	769,312	593,005
Net cash provided by (used in) operating activities	451,013	(107,934)
Investing activities:
Proceeds from the sale of property, plant and equipment	0	5,782
Purchase of property, plant and equipment	(14,849)	(188,024)
Payments received on distributor note receivable	50,639	47,698
Net cash provided by (used in) investing activities	35,790	(134,544)
Financing activities:
Principal payments on long-term borrowings	(288,851)	(248,712)
Net cash used in financing activities	(288,851)	(248,712)
Effect of exchange rate changes on cash and cash equivalents	5,511	(903)
Increase (decrease) in cash and cash equivalents	203,463	(492,093)
Cash and cash equivalents at beginning of period	3,262,263	4,989,392
Cash and cash equivalents at end of period	3,465,726	4,497,299
Noncash financing transactions (Note 5):
Issuance of promissory notes	$ 0	$ 424,000