Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 1,273,619	$ 1,231,265
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	465,522	458,118
Loss on disposal or abandonment of assets	798	335
Non-cash stock-based compensation	28,969	44,794
Deferred income taxes	(49,498)	(103,187)
Foreign currency translation	24,388	344,789
Net changes in assets and liabilities:
Accounts receivable-trade	(42,110)	36,292
Inventory	539,337	(1,204,464)
Prepaid expenses	(103,058)	(101,357)
Other current assets	110,617	(126,374)
Accounts payable-trade	6,055	802,561
Accrued expenses and other liabilities	(1,246,439)	(1,717,366)
Income taxes	146,483	489,836
Total adjustments	(118,936)	(1,076,023)
Net cash provided by operating activities	1,154,683	155,242
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(240,020)	(599,757)
Increase (decrease) in other assets	957	(10,578)
Net cash used in investing activities	(239,063)	(610,335)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from notes payable and long term debt	540,940
Repurchase of common stock (treasury stock)	(540,940)
Net cash used in financing activities
NET INCREASE (DECREASE) IN CASH	915,620	(455,093)
CASH, beginning of period	18,337,258	16,862,304
CASH, end of period	19,252,878	16,407,211
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest paid during the period	64,642	36,344
Income tax paid during the period, net of (refunds)	$ 372,587	$ 17,303