Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 2,592,177	$ 2,780,411
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	1,310,774	1,466,534
Loss on disposal or abandonment of assets	4,556	10,484
Non-cash stock-based compensation	76,447	205,380
Deferred income taxes	(115,460)	(214,092)
Foreign currency translation	(93,163)	961,860
Net changes in assets and liabilities:
Accounts receivable-trade	42,600	31,606
Inventory	(3,409,433)	(7,970,520)
Prepaid expenses	125,034	(43,507)
Other current assets	(111,688)	(212,527)
Accounts payable-trade	28,525	947,132
Accrued expenses and other liabilities	(609,577)	(1,323,785)
Income taxes payable	(475,082)	16,816
Total adjustments	(3,226,467)	(6,124,619)
Net cash used in operating activities	(634,290)	(3,344,208)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(887,679)	(1,530,547)
Proceeds from sale of assets	17,718	699
Increase in other assets	(5,736)	(32,268)
Net cash used in investing activities	(875,697)	(1,562,116)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from notes payable and long term debt	982,939
Repurchase of common stock (treasury stock)	(995,238)
Proceeds from exercise of stock options		223,404
Net cash (used in) provided by financing activities	(12,299)	223,404
NET DECREASE IN CASH	(1,522,286)	(4,682,920)
CASH, beginning of period	18,337,258	16,862,304
CASH, end of period	16,814,972	12,179,384
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest paid during the period	223,534	143,165
Income tax paid during the period, net of refunds	$ 1,967,176	$ 1,218,410