Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Operating activities:
Net income	$ 532,384	$ 609,800
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	240,454	294,645
Stock-based compensation	53,277	45,942
Deferred income taxes	(36,000)	(62,000)
Foreign currency transaction (gain)/loss	(23,052)	(17,945)
(Increase) decrease in accounts receivable	19,509	67,452
(Increase) decrease in inventories	(143,739)	(124,077)
(Increase) decrease in refundable income taxes	96,387	62,324
(Increase) decrease in prepaid expenses and other current assets	(499,481)	(617,008)
(Increase) decrease in other assets	(25,886)	(14,619)
Increase (decrease) in income taxes payable	287,467	293,250
Increase (decrease) in accounts payable & accrued expenses and other noncurrent liabilities	1,267,820	1,797,517
Net cash provided by operating activities	1,769,140	2,335,281
Investing activities:
Purchase of property, plant and equipment	(61,457)	(87,748)
Purchase of note and mortgage secured by underlying property	(2,000,000)	0
Payment of life insurance premiums	(259,121)	(252,250)
Net cash used in investing activities	(2,320,578)	(339,998)
Financing activities:
Principal payments on long-term borrowings	(144,118)	(140,240)
Purchase of stock for treasury	(9,985)	0
Net cash used in financing activities	(154,103)	(140,240)
Effect of exchange rate changes on cash and cash equivalents	121,763	46,037
Increase (decrease) in cash and cash equivalents	(583,778)	1,901,080
Cash and cash equivalents at beginning of period	7,174,213	6,331,038
Cash and cash equivalents at end of period	$ 6,590,435	$ 8,232,118

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).