CONDENSED STATEMENTS OF CASH FLOWS (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 1,828,535	$ 1,951,710
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	279,204	170,560
Stock-based compensation	215,988	190,739
Deferred income taxes	(87,259)	(76,400)
Changes in operating assets and liabilities:
Accounts receivable	(860,611)	(1,149,815)
Prepaid expenses, other current assets, and income tax receivable	131,406	(138,968)
Accounts payable	168,883	(288,201)
Accrued expenses	(223,646)	199,792
Deferred revenue	0	(5,175)
Net cash provided by operating activities	1,452,500	854,242
CASH FLOWS USED IN INVESTING ACTIVITIES:
Purchases of short-term investments	0	(15,234,872)
Sales of short-term investments	0	15,233,093
Purchases of equipment and leasehold improvements	(549,556)	(545,018)
Other assets	(35,895)	(68,601)
Net cash used in investing activities	(585,451)	(615,398)
CASH FLOWS USED IN FINANCING ACTIVITIES:
Proceeds from issuance of stock, net of tax withholding	(94,559)	(86,992)
Cash dividends paid	(1,574,866)	(1,254,027)
Net cash used in financing activities	(1,669,425)	(1,341,019)
Net decrease in cash	(802,376)	(1,102,175)
Cash and Cash Equivalents, beginning of period	5,564,233	3,720,488
Cash and Cash Equivalents, end of period	4,761,857	2,618,313
Supplemental Disclosures of Cash Flow Information:
Cash paid for income taxes	$ 647,354	$ 1,129,000