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Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data | Common Stock [Member] | Additional Paid-In Capital [Member] | Deferred Contract Costs-Warrant [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Accumulated Deficit [Member] | Total
--- | --- | --- | --- | --- | --- | ---
Balance at Mar. 31, 2008 | $ 415 | $ 615,025 | $ (8) | $ 3,522 | $ (410,502) | $ 208,452
Balance, Shares at Mar. 31, 2008 | 41,542,000 |  |  |  |  |
Exercise of stock options | 7 | 12,167 |  |  |  | 12,174
Exercise of stock options, Shares | 738,000 |  |  |  |  |
Exercise of warrants | 2 | 4,339 |  |  |  | 4,341
Exercise of warrants, Shares | 148,000 |  |  |  |  |
Issuance of common stock - ESPP |  | 289 |  |  |  | 289
Issuance of common stock - ESPP, Shares | 17,000 |  |  |  |  |
Issuance of common stock - restricted shares | 4 | (4) |  |  |  |
Issuance of common stock - restricted shares, Shares | 404,000 |  |  |  |  |
Stock-based compensation expense |  | 9,672 |  |  |  | 9,672
Non-employee stock-based compensation expense |  | 7 |  |  |  | 7
Issuance of stock for calendar 401(k) match |  | 556 |  |  |  | 556
Issuance of stock for calendar 401(k) match, Shares | 25,000 |  |  |  |  |
Contingent consideration | 5 | 11,003 |  |  |  | 11,008
Contingent consideration, Shares | 424,000 |  |  |  |  |
Amortization of deferred warrant costs |  |  | 6 |  |  | 6
Net unrealized losses on investments |  |  |  | (113) |  | (113)
Cumulative translation adjustment |  |  |  | (7,896) |  | (7,896)
Net (loss) income |  |  |  |  | (16,635) | (16,635)
Balance at Mar. 31, 2009 | 433 | 653,054 | (2) | (4,487) | (427,137) | 221,861
Balance, Shares at Mar. 31, 2009 | 43,298,000 |  |  |  |  |
Exercise of stock options | 8 | 18,632 |  |  |  | 18,640
Exercise of stock options, Shares | 810,000 |  |  |  |  |
Issuance of common stock - ESPP |  | 363 |  |  |  | 363
Issuance of common stock - ESPP, Shares | 14,000 |  |  |  |  |
Issuance of common stock - restricted shares | 2 | (2) |  |  |  |
Issuance of common stock - restricted shares, Shares | 233,000 |  |  |  |  |
Stock-based compensation expense |  | 13,494 |  |  |  | 13,494
Non-employee stock-based compensation expense |  | 138 |  |  |  | 138
Issuance of stock for calendar 401(k) match | 1 | 857 |  |  |  | 858
Issuance of stock for calendar 401(k) match, Shares | 33,000 |  |  |  |  |
Contingent consideration | 4 | 10,824 |  |  |  | 10,828
Contingent consideration, Shares | 426,000 |  |  |  |  |
Minority interest investment |  | 1,057 |  |  |  | 1,057
Minority interest investment, Shares | 32,000 |  |  |  |  |
Amortization of deferred warrant costs |  |  | 2 |  |  | 2
Net unrealized losses on investments |  |  |  | (37) |  | (37)
Cumulative translation adjustment |  |  |  | (2,487) |  | (2,487)
Net (loss) income |  |  |  |  | 16,248 | 16,248
Balance at Mar. 31, 2010 | 448 | 698,417 |  | (7,011) | (410,889) | 280,965
Balance, Shares at Mar. 31, 2010 | 44,846,000 |  |  |  |  | 44,845,541
Exercise of stock options | 6 | 7,198 |  |  |  | 7,204
Exercise of stock options, Shares | 567,000 |  |  |  |  |
Issuance of common stock - ESPP |  | 614 |  |  |  | 614
Issuance of common stock - ESPP, Shares | 26,000 |  |  |  |  |
Issuance of common stock - restricted shares | 3 | (3) |  |  |  |
Issuance of common stock - restricted shares, Shares | 301,000 |  |  |  |  |
Stock-based compensation expense |  | 13,412 |  |  |  | 13,412
Non-employee stock-based compensation expense |  | 31 |  |  |  | 31
Issuance of stock for calendar 401(k) match |  | 841 |  |  |  | 841
Issuance of stock for calendar 401(k) match, Shares | 29,000 |  |  |  |  |
Issuance of common stock - follow-on public offering, net of costs | 46 | 155,194 |  |  |  | 155,240
Issuance of common stock- public offering, net of costs, Shares | 4,600,000 |  |  |  |  |
Contingent consideration | 4 | 10,000 |  |  |  | 10,004
Contingent consideration, Shares | 350,000 |  |  |  |  |
Net unrealized losses on investments |  |  |  | (90) |  | (90)
Cumulative translation adjustment |  |  |  | 10,918 |  | 10,918
Net (loss) income |  |  |  |  | (186,284) | (186,284)
Balance at Mar. 31, 2011 | $ 507 | $ 885,704 |  | $ 3,817 | $ (597,173) | $ 292,855
Balance, Shares at Mar. 31, 2011 | 50,719,000 |  |  |  |  | 50,719,827

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