Consolidated Statements of Cash Flows (unaudited) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net income	$ 753,989	$ 1,353,084
Adjustments to reconcile net income to net cash provided By operating activities:
Depreciation and amortization	44,845	16,081
Stock-based compensation expense	5,354	26,400
Deferred tax assets	5,020	18,831
Gain on the sale of fixed assets	(1,150)	0
Changes in operating assets and liabilities:
Accounts receivable	3,082,608	2,172,214
Prepaid expenses and other current assets	(39,696)	(214,129)
Accounts payable and accrued expenses	91,356	253,070
Accrued taxes payable	0	332,924
Deferred revenue	(17,283)	(44,881)
Net cash provided by operating activities	3,925,043	3,913,594
Cash flows from investing activities:
Maturity of marketable investments	2,206,964	3,200,000
Purchases of marketable investments	(3,213,002)	(3,042,964)
Proceeds from sale of fixed asset	1,150	0
Net cash provided by (used in) investing activities	(1,004,888)	157,036
Cash flows from financing activities:
Proceeds from stock option exercises	66,100	0
Payments for repurchase of common stock	(80,971)	(205,949)
Excess tax benefits from share-based payment arrangements	404,650
Net cash used in financing activities	389,779	(205,949)
Increase in cash and cash equivalents	3,309,934	3,864,681
Cash and cash equivalents at beginning of year	5,624,860	3,383,737
Cash and cash equivalents at end of period	8,934,794	7,248,418
Cash paid during the year for:
Interest	0	0
Taxes	$ 15,000	$ 378,500