Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash flows from operating activities:
Net income (loss)	$ 6,601,626	$ (1,508,540)	$ (1,956,543)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	50,685	18,949	35,669
Stock-based compensation expense	517,367	1,901,781	1,490,083
Deferred tax assets	(3,047,955)	0	0
Accounts receivable	(1,250,792)	(459,291)	5,616,601
Prepaid expenses and other current assets	(65,642)	(28,664)	(371,592)
Accounts payable and accrued expenses	(3,009,109)	24,394	55,658
Deferred revenue	(483,769)	(831,111)	(1,145,125)
Net cash provided by (used in) operating activities from continuing operations	(687,589)	(882,482)	3,724,751
Cash flows from investing activities:
Maturities of marketable securities	5,360,970	4,548,541	2,799,754
Purchases of marketable securities	(5,000,000)	(5,360,970)	(6,448,295)
Net cash used in investing activities from continuing operations	360,970	(812,429)	(3,648,541)
Cash flows from financing activities:
Proceeds from stock option exercises	82,450	673,375	380,029
Repurchases of common stock	(739,551)	(458,001)	0
Excess tax benefits from share-based payment arrangements	1,709,699	0	0
Net cash provided by financing activities from continuing operations	1,052,598	215,374	380,029
Increase (decrease) in cash and cash equivalents	725,979	(1,479,537)	456,239
Cash and cash equivalents at beginning of year	2,470,852	3,950,389	3,494,150
Cash and cash equivalents at end of year	3,196,831	2,470,852	3,950,389
Cash paid during the year for:
Interest	0	0	0
Taxes	$ 190,000	$ 9,851	$ 214,467