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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] | Treasury Stock [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Accumulated Deficit [Member] | Total
--- | --- | --- | --- | --- | --- | --- | ---
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 401(k) match | 1 | 857 |  |  |  |  | 858
Issuance of stock for 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 |  |  |  |  |  |
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 401(k) match |  | 841 |  |  |  |  | 841
Issuance of stock for 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- follow-on 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
Exercise of stock options |  | 24 |  |  |  |  | 24
Exercise of stock options, shares | 3,000 |  |  |  |  |  | 2,700
Issuance of common stock - ESPP | 1 | 303 |  |  |  |  | 304
Issuance of common stock - ESPP, shares | 89,000 |  |  |  |  |  |
Issuance of common stock - restricted shares | 7 | (7) |  |  |  |  |
Issuance of common stock - restricted shares, shares | 698,000 |  |  |  |  |  |
Stock-based compensation expense |  | 9,864 |  |  |  |  | 9,864
Issuance of stock for 401(k) match | 1 | 719 |  |  |  |  | 720
Issuance of stock for 401(k) match, shares | 127,000 |  |  |  |  |  |
Contingent consideration | 4 | (4) |  |  |  |  |
Contingent consideration, shares | 350,000 |  |  |  |  |  |
Treasury stock, at cost |  |  |  | (271) |  |  | (271)
Cumulative translation adjustment |  |  |  |  | (1,790) |  | (1,790)
Net (loss) income |  |  |  |  |  | (136,827) | (136,827)
Balance at Mar. 31, 2012 | 520 | 896,603 |  | (271) | 2,027 | (734,000) | 164,879
Balance, shares at Mar. 31, 2012 | 51,986,000 |  |  |  |  |  | 51,962,141
Balance at Dec. 31, 2011 |  |  |  |  |  |  |
Treasury stock, at cost |  |  |  | (271) |  |  | (271)
Net (loss) income |  |  |  |  |  |  | (21,168)
Balance at Mar. 31, 2012 |  |  |  | $ (271) |  |  | $ 164,879
Balance, shares at Mar. 31, 2012 |  |  |  |  |  |  | 51,962,141

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