Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating activities:
Net income (loss)	$ (238,305)	$ 523,793
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	201,634	217,631
Stock-based compensation	7,535	8,444
Non-cash life insurance policy accretion	(6,617)	(30,135)
(Gain) loss on sale of property, plant and equipment	(3,800)
Deferred income taxes		5,000
Foreign currency transaction (gain) loss	341	(36,133)
(Increase) decrease in accounts receivable and accounts due from employees and distributors	(104,767)	(138,452)
(Increase) decrease in inventories	393,576	268,776
(Increase) decrease in refundable income taxes	(3,550)	29,454
(Increase) decrease in prepaid expenses and other current assets	(320,175)	(353,515)
(Increase) decrease in other assets	(6,052)	(1,906)
Increase (decrease) in income taxes payable	18,664
Increase (decrease) in accounts payable & accrued expenses and other noncurrent liabilities	561,297	37,429
Net cash provided by operating activities	499,781	530,386
Investing activities:
Purchase of property, plant and equipment	(15,383)	(261,550)
Proceeds from the sale of property, plant and equipment	3,888
Payments received on distributor note receivable	28,326	26,680
Net cash provided by (used in) investing activities	16,831	(234,870)
Financing activities:
Principal payments on long-term borrowings	(108,320)	(113,743)
Net cash used in financing activities	(108,320)	(113,743)
Effect of exchange rate changes on cash and cash equivalents	(4,240)	40,703
Increase (decrease) in cash and cash equivalents	404,052	222,476
Cash and cash equivalents at beginning of period	3,272,788	3,606,817
Cash and cash equivalents at end of period	$ 3,676,840	$ 3,829,293