CONDENSED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 2,937,271	$ 2,707,016
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	642,580	419,541
Stock-based compensation	386,297	337,078
Changes in assets and liabilities:
Accounts receivable	(672,737)	(852,362)
Prepaid expenses, other current assets, and income tax receivable	622,123	36,183
Accounts payable	(92,708)	304,759
Accrued expenses	184,916	(337,391)
Deferred income taxes	(155,217)	(136,180)
Net cash provided by operating activities	3,852,525	2,478,644
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of equipment and leasehold improvements	(835,735)	(1,180,786)
Cost of internally developed software	(540,097)	(656,415)
Other assets	(227,482)	(81,889)
Net cash used in investing activities	(1,603,314)	(1,919,089)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net proceeds from exercise of stock options	20,839	0
Proceeds from issuance of stock, net of tax withholding	(111,249)	(94,559)
Cash dividends paid	(2,381,845)	(2,365,730)
Net cash used in financing activities	(2,472,255)	(2,460,289)
Net decrease in cash and cash equivalents	(223,044)	(1,900,734)
Cash and cash equivalents, beginning of period	3,065,785	5,564,233
Cash and cash equivalents, end of period	2,842,741	3,663,499
Supplemental Disclosures of Cash Flow Information:
Cash paid for income taxes	$ 643,000	$ 1,208,800