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Credit Facilities (Narrative) (Details) (USD $) | 12 Months Ended |
--- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013
Debt Instrument [Line Items] |  |
Margin rate on credit | 1.50% |
Outstanding uncommitted lines of credit | $ 62,905,000 | $ 105,318,000
Weighted average interest rates on short-term borrowings outstanding | 3.50% | 3.80%
Uncommitted lines of credit [Member] |  |
Debt Instrument [Line Items] |  |
Outstanding uncommitted lines of credit | 63,000,000 | 105,000,000
Unused lines of Credit [Member] |  |
Debt Instrument [Line Items] |  |
Outstanding uncommitted lines of credit | 342,000,000 |
Bank Credit Agreement [Member] |  |
Debt Instrument [Line Items] |  |
Number Of Years Of Bank Credit Agreement | 5 years |
Maturity date of credit facility | Nov. 01, 2016 |
Bank Credit Agreement [Member] | Federal Funds Rate [Member] |  |
Debt Instrument [Line Items] |  |
Margin rate on credit | 0.50% |
Bank Credit Agreement [Member] | Prime Rate Or One Month Libor [Member] |  |
Debt Instrument [Line Items] |  |
Margin rate on credit | 1.00% |
Bank Credit Agreement [Member] | Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Amount under revolving credit facility | 450,000,000 |
Bank Credit Agreement [Member] | Amortizing Bank Term Loan Maturing November 2016 [Member] |  |
Debt Instrument [Line Items] |  |
Fully funded amortizing term loan | 100,000,000 |
Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Amount Outstanding under revolving credit facility | $ 0 |

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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + 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 + 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 + Details
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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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