CONDENSED STATEMENTS OF CASH FLOWS (USD $)	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 1,951,710	$ 1,379,363
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	170,560	125,034
Stock-based compensation	190,739	222,228
Deferred income taxes	(76,400)	(12,605)
Changes in operating assets and liabilities:
Accounts receivable	(1,149,815)	(1,252,245)
Prepaid expenses and other current assets	(138,968)	(240,569)
Accounts payable	(288,201)	88,898
Accrued expenses	199,792	82,034
Deferred revenue	(5,175)	(14,085)
Net cash provided by operating activities	854,242	378,053
CASH FLOWS USED IN INVESTING ACTIVITIES:
Purchases of short-term investments	(15,234,872)	(1,009,642)
Sales of short-term investments	15,233,093	0
Purchases of fixed assets	(545,018)	(235,931)
Other assets	(68,601)	0
Net cash used in investing activities	(615,398)	(1,245,573)
CASH FLOWS USED IN FINANCING ACTIVITIES:
Proceeds from issuance of stock, net of tax withholding	(86,992)	(49,261)
Cash dividends paid	(1,254,027)	(1,249,222)
Net cash used in financing activities	(1,341,019)	(1,298,483)
Net decrease in cash	(1,102,175)	(2,166,003)
Cash and Cash Equivalents, beginning of period	3,720,488	4,840,367
Cash and Cash Equivalents, end of period	2,618,313	2,674,364
Supplemental Disclosures of Cash Flow Information:
Cash paid for income taxes	$ 1,129,000	$ 615,000