Condensed Statements of Cash Flows (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net income	$ 6,701	$ 197,558
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	76,749	66,275
Provision for doubtful accounts	(3,607)	0
Provision for inventory losses	1,527	21,764
Stock-based compensation expense	67,510	23,071
Change in operating assets and liabilities:
Trade receivables	194,068	(564,246)
Inventories	(91,150)	248,932
Prepaid expenses	(120,785)	(89,859)
Income tax deposit	(9,800)	0
Accounts payable	93,253	(37,188)
Accrued compensation expenses	84,443	166,140
Income taxes payable	3,250	131,451
Other current liabilities	10,766	(2,458)
Net cash provided by operating activities	312,925	161,440
Cash flows from investing activities:
Purchases of property and equipment	(39,580)	(50,445)
Other long term assets	(36,823)	(103,300)
Net cash used in investing activities	(76,403)	(153,745)
Cash flows from financing activities:
Dividend payout	(101,043)	(101,043)
Proceeds from exercise of stock options	11,000	63,000
Net cash used in financing activities	(90,043)	(38,043)
Net increase (decrease) in cash and cash equivalents:	146,479	(30,348)
Cash and cash equivalents at beginning of period:	3,421,679	2,306,258
Cash and cash equivalents at end of period:	$ 3,568,158	$ 2,275,910