Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash flows from operating activities:
Net loss	$ (33,962,548)	$ (10,794,736)	$ (4,122,817)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	2,132,136	1,005,068	404,795
Compensation associated with issuance of stock options	4,830,831	5,379,961	2,813,816
Impairment of goodwill and purchased intangible assets	7,477,832
Accretion of royalty liability	67,500
Changes in assets and liabilities, net of effects from business acquisition:
(Increase) decrease in accounts receivable	1,900,250	5,514,845	(7,744,529)
(Increase) decrease in prepaid expenses and other current assets	401,992	152,601	(111,866)
(Increase) decrease in other assets	11,993	(209,941)	18,842
Increase (decrease) in accounts payable and accrued expenses	924,087	810,406	(42,079)
Increase (decrease) in deferred revenue	106,922	(3,331,530)	6,303,168
Increase in royalty liability	321,076	264,553
Increase (decrease) in other long-term liabilities	31,713	(16,830)
Net cash used in operating activities	(15,756,216)	(1,225,603)	(2,480,670)
Cash flows from investing activities:
Acquisition of property and equipment	(169,660)	(995,403)	(528,138)
Acquisition of Safend, Ltd., net of cash acquired		(803,315)
Acquisition of intangible assets			(1,100,000)
Net cash used in investing activities	(169,660)	(1,798,718)	(1,628,138)
Cash flows from financing activities:
Payments on capital lease obligation	(72,075)	(66,771)	(61,857)
Net proceeds from issuance of common stock	13,659,587
Proceeds from employee stock purchase plans	666,095	814,644	601,807
Proceeds from employee stock option exercises	79,503	806,119	1,284,629
Proceeds from exercise of warrants	320,500	1,260,288	3,979,291
Net cash provided by financing activities	14,653,610	2,814,280	5,803,870
Net increase (decrease) in cash and cash equivalents	(1,272,266)	(210,041)	1,695,062
Cash and cash equivalents at beginning of year	3,385,035	3,595,076	1,900,014
Cash and cash equivalents at end of year	2,112,769	3,385,035	3,595,076
Non-cash financing activities:
Cashless exercise of warrants	404	1,204
Cash paid during the year for:
Interest	119,763	11,758	16,672
Income taxes	$ 78,235	$ 81,378	$ 68,205