v3.7.0.1

Debt - Additional Information (Detail) - USD ($) |  |  |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 17, 2015 | Jun. 05, 2015 | Jul. 08, 2014 | May 28, 2008 | Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2015 | Jun. 08, 2015 | Apr. 23, 2015 | Dec. 28, 2014
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Long-term Debt and Capital Lease Obligations, Current |  |  |  |  | $ 0 | $ 0 |  |  |  |
Company owned capital stock percentage |  |  |  |  | 65.00% |  |  |  |  |
Stock Price Upon Issuance Of Convertible Notes |  |  |  | $ 30.19 |  |  |  |  |  |
Short term borrowing outstanding amount |  |  |  |  | $ 18,359,000 | $ 22,144,000 |  |  |  |
Short-term debt, weighted-average interest rates |  |  |  |  | 7.00% | 8.00% |  |  |  |
Deferred financing fees, net of accumulated amortization |  |  |  |  | $ 4,891,000 | $ 6,279,000 |  |  |  |
Amortization expense included in interest expense |  |  |  |  | 1,388,000 | $ 1,464,000 | $ 1,263,000 |  |  |
Face Value of Convertible Notes with Accrued Interest |  |  |  |  |  |  |  | $ 1,000.66 |  |
Shares issued from treasury stock to settle conversion premium on Convertible Notes | 1,889,431 |  |  |  |  | 1,889,431 |  |  |  |
Debt Instrument, Convertible, Percent of Holders that Exercised Conversion Rights |  | 99.00% |  |  |  |  |  |  |  |
Repayments of Convertible Debt | $ 172,388,000 |  |  |  | 0 | $ 172,266,000 | 234,000 |  |  |
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt |  |  |  |  | $ 84,140,000 | 84,140,000 |  |  |  |
2011 Credit Facility Due 2018 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument maturity year |  |  |  |  | 2018 |  |  |  |  |
Convertible Notes Payable |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Face value of debt instrument |  |  |  | $ 172,500,000 |  |  |  |  |  |
Interest rate of debt instrument |  |  |  | 3.375% |  |  |  |  |  |
Amount of interest cost recognized for the amortization of the discount |  |  |  |  | $ 0 | 1,330,000 | 8,283,000 |  |  |
Stand by letters of credit |  |  |  |  | 2,189,000 | 2,693,000 |  |  |  |
Available lines of credit |  |  |  |  | 475,947,000 | 472,187,000 |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity, Uncommitted Portion |  |  |  |  | $ 142,872,000 | 144,112,000 |  |  |  |
Senior Unsecured 5.00% Due 2023 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |  |  | $ 300,000,000 |
Interest rate of debt instrument |  |  |  |  |  |  |  |  | 5.00% |
Senior Unsecured 3.375% Convertible Notes Due 2038 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate of debt instrument |  |  |  |  | 3.375% |  |  |  | 3.375% |
Debt instrument maturity year |  |  |  |  | 2038 |  |  |  |  |
Interest paid |  |  |  |  | $ 20,781,000 | 15,176,000 | $ 10,088,000 |  |  |
Revolving Credit Facility [Member] | 2011 Credit Facility Due 2018 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |  |  |  | $ 165,000,000
Incremental Commitment Agreement [Member] | Revolving Commitments and/or Term Loans [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Increase in Borrowing Capacity Limit |  |  | $ 300,000,000 |  |  |  |  |  |  |
Incremental Commitment Agreement [Member] | Secured Debt [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Incremental Term Loan Commitment |  |  | 150,000,000 |  |  |  |  |  |  | $ 127,500,000
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months |  |  |  |  | 15,000,000 |  |  |  |  |
Incremental Commitment Agreement [Member] | Secured Debt [Member] | 2011 Credit Facility Due 2018 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | 500,000,000 |  |  |  |  |  |  |
Line of Credit Facility, Incremental Term Loan Commitment |  |  |  |  | $ 292,500,000 | $ 312,500,000 |  |  |  |
Debt Instrument Quarterly Installments Beginning June 30, 2014 through June 30, 2016 [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment |  |  | 1,875,000 |  |  |  |  |  |  |
Debt Instrument Quarterly Installments Beginning June 30, 2016 through September 30, 2018 [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment |  |  | 3,750,000 |  |  |  |  |  |  |
Debt Instrument Final Installments Payable on September 30, 2018 [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment |  |  | $ 108,750,000 |  |  |  |  |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Incremental Commitment Agreement [Member] | Revolving Commitments and/or Term Loans [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest at a floating rate |  |  |  |  | 1.25% |  |  |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Incremental Commitment Agreement [Member] | Revolving Commitments and/or Term Loans [Member] | Minimum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest at a floating rate |  |  | 1.25% |  |  |  |  |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Incremental Commitment Agreement [Member] | Revolving Commitments and/or Term Loans [Member] | Maximum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest at a floating rate |  |  | 1.75% |  |  |  |  |  |  |
Higher of Bank of America Prime Rate or Federal Funds Effective Rate [Member] | Incremental Commitment Agreement [Member] | Revolving Commitments and/or Term Loans [Member] | Minimum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest at a floating rate |  |  | 0.25% |  |  |  |  |  |  |
Higher of Bank of America Prime Rate or Federal Funds Effective Rate [Member] | Incremental Commitment Agreement [Member] | Revolving Commitments and/or Term Loans [Member] | Maximum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest at a floating rate |  |  | 0.75% |  |  |  |  |  |  |

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- Definition Adjustment to additional paid in capital resulting from the recognition of convertible debt instruments as two separate components - a debt component and an equity component. This bifurcation may result in a basis difference associated with the liability component that represents a temporary difference for purposes of applying accounting for income taxes. The initial recognition of deferred taxes for the tax effect of that temporary difference is as an adjustment to additional paid in capital. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 25 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=51819886&loc=SL6014347-161799 + 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 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: 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 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: 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 Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 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 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 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)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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