CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues:
Product revenues	$ 11,609,760	$ 12,198,013	$ 22,868,775	$ 22,016,210
Support and services revenues	8,018,248	8,072,696	15,718,495	15,374,154
Total revenues	19,628,008	20,270,709	38,587,270	37,390,364
Cost of revenues:
Product	2,266,040	2,550,540	3,989,045	4,059,225
Support and service	3,734,884	3,303,348	7,102,797	6,916,045
Total cost of revenues	6,000,924	5,853,888	11,091,842	10,975,270
Gross profit	13,627,084	14,416,821	27,495,428	26,415,094
Operating expenses
Research and development costs	4,928,824	6,638,985	10,785,118	13,765,819
Selling and marketing	10,521,307	10,427,468	18,995,399	21,441,968
General and administrative	2,957,460	2,453,525	5,558,995	4,813,474
Investigation costs	1,188,671		3,799,791
Total operating expenses	19,596,262	19,519,978	39,139,303	40,021,261
Operating loss	(5,969,178)	(5,103,157)	(11,643,875)	(13,606,167)
Interest and other income (loss), net	150,007	7,499	450,956	(102,441)
Loss before income taxes	(5,819,171)	(5,095,658)	(11,192,919)	(13,708,608)
Provision (benefit) for income taxes	69,868	(1,720,160)	662,384	(4,803,045)
Net loss	$ (5,889,039)	$ (3,375,498)	$ (11,855,303)	$ (8,905,563)
Basic net loss per share (in dollars per share)	$ (0.13)	$ (0.07)	$ (0.26)	$ (0.20)
Diluted net loss per share (in dollars per share)	$ (0.13)	$ (0.07)	$ (0.26)	$ (0.20)
Weighted average basic shares outstanding (in shares)	46,643,349	45,554,849	46,453,196	45,129,802
Weighted average diluted shares outstanding (in shares)	46,643,349	45,554,849	46,453,196	45,129,802