v2.4.0.6

Debt - Additional Information (Detail) | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2013 USD ($) | Mar. 31, 2012 USD ($) | Mar. 31, 2011 USD ($) | Mar. 31, 2013 Option Two Libor Rate | Mar. 31, 2013 Option Two Federal Funds Rate | Mar. 31, 2013 2011 Senior Secured Revolving Credit Facility USD ($) | Mar. 31, 2013 2011 Senior Secured Revolving Credit Facility Option One | Mar. 31, 2013 2011 Senior Secured Revolving Credit Facility Option Two | Mar. 31, 2013 Applicable Percentage Option One Libor Rate | Mar. 31, 2013 Applicable Percentage Option Two Libor Rate | Mar. 31, 2013 Secured Debt | Mar. 31, 2013 China Term Loan due 2017 CNY Y | Mar. 31, 2013 India Term Loan due 2017 USD ($) | Mar. 31, 2013 India Term Loan due 2017 INR | May 28, 2008 Convertible Notes Payable USD ($) | Mar. 31, 2013 Convertible Notes Payable USD ($) | Mar. 31, 2012 Convertible Notes Payable USD ($) | Mar. 31, 2011 Convertible Notes Payable USD ($) | Mar. 31, 2013 Senior Unsecured 3.375% Convertible Notes Due 2038 USD ($) | Mar. 31, 2012 Senior Unsecured 3.375% Convertible Notes Due 2038 USD ($) | Mar. 31, 2011 Senior Unsecured 3.375% Convertible Notes Due 2038 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior secured revolving credit facility, initiation date | Mar. 29, 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  | $ 350,000,000 |  |  |  |  |  | 75,000,000 |  | 273,780,000 |  |  |  |  |  |  |
Maturity date |  |  |  |  |  | Mar. 31, 2016 |  |  |  |  |  |  |  |  |  | Jun. 01, 2038 |  |  |  |  |
Liquidity test required to be met | February 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capacity to meet potential obligations related to Convertible Notes | June 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest on borrowings at a floating rate |  |  |  |  |  |  | ("LIBOR") plus an applicable percentage (currently 1.25%) | The greater of the Federal Funds rate plus 0.50% or the prime rate, or one-month LIBOR plus 1.0%, plus an applicable percentage (currently 0.25%) |  |  |  |  |  |  |  |  |  |  |  |  |
Interest at a floating rate |  |  |  | 1.00% | 0.25% |  |  |  | 1.25% | 0.50% |  |  |  |  |  |  |  |  |  |  |
Interest rate of debt instrument |  |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |  | 3.375% |  |  | 3.375% |  |
Company owned capital stock percentage | 65.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term loan (in years) |  |  |  |  |  |  |  |  |  |  |  | 6 |  |  |  |  |  |  |  |  |
Short term borrowing outstanding amount | 22,702,000 | 16,042,000 |  |  |  |  |  |  |  |  |  |  | 15,077,000 |  |  |  |  |  |  |  |
Face value of debt instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 172,500,000 | 172,500,000 | 172,500,000 |  |  |  |
Debt instrument maturity year |  |  |  |  |  |  |  |  |  |  |  |  | 2017 | 2017 |  | 2038 |  |  | 2038 |  |
Net proceeds received after deduction of commissions and offering expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 168,200,000 |  |  |  |  |  |
Semi-annual payment of interest in arrears |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | June 1 and December 1 |  |  |  |  |
Initial conversion rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 24.6305 |  |  |  |  |
Principal amount of Convertible Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000 |  |  |  |  |
Conversion price per share | $ 40.60 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 40.60 |  |  |  |  |
Redemption price percentage of debt instrument of accreted principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |
Minimum price of Common Stock per share for eligibility of make-whole premium payment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 29.00 |  |  |  |  |
Amortized remaining discount period | 26 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate consideration on conversion shares | 4,248,761 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.50% |  |  |  |  |
Amount of interest cost recognized for the amortization of the discount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,001,000 | 6,435,000 | 5,917,000 |  |  |
Available lines of credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 469,123,000 | 377,230,000 |  |  |  |
Outstanding amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 120,373,000 | 95,340,000 |  |  |  |
Interest paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,056,000 | 8,933,000 | 16,101,000
Short-term debt, weighted-average interest rates | 9.00% | 9.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stand by letters of credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11,854,000 | 9,108,000 |  |  |  |
Write-off of unamortized deferred financing fees |  |  | 2,308,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
New deferred financing fees |  |  | 3,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred financing fees, net of accumulated amortization | 3,355,000 | 4,634,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization expense included in interest expense | $ 1,279,000 | $ 1,278,000 | $ 1,861,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 32 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 + Details
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- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 32 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 + Details
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- Definition Remaining amortization period for discount on the liability component of convertible debt which may be settled in cash upon conversion, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870 + Details
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- Definition The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16, 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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