Condensed Statements of Cash Flows (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net income	$ 132,331	$ 633,795
Adjustments to reconcile net income to net cash (used in ) provided by operating activities:
Depreciation and amortization	156,300	123,452
Provision for bad debt expense	(6,817)	155
Provision for inventory loss	15,231	43,189
Stock based compensation expense	134,160	45,358
Changes in operating assets and liabilities:
Trade receivables	(343,547)	(303,472)
Inventories	(644,856)	444,896
Prepaid expenses	(118,482)	2,683
Income tax deposit	(96,458)	0
Income tax payable	79,615	74,692
Accounts payable	412,066	75,339
Accrued compensation expenses	260,511	277,703
Other current liabilities	(2,906)	(20,040)
Net cash (used in) provided by operating activities	(22,852)	1,397,750
Cash flows from investing activities:
Purchase of property and equipment	(82,698)	(193,837)
Purchase of other assets	(38,423)	(112,540)
Net cash used in investing activities	(121,121)	(306,377)
Cash flows from financing activities:
Dividend payout	(202,186)	(202,086)
Proceeds from exercise of stock options	11,000	63,000
Net cash used in financing activities	(191,186)	(139,086)
Net (decrease) increase in cash	(335,159)	952,287
Cash at beginning of period	3,421,679	2,306,258
Cash at end of period	3,086,520	3,258,545
Supplemental cash flow information
Cash paid for income taxes	$ 105,059	$ 345,262