Employee Benefit Plans (Weighted Average Discount Rate) (Details)
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12 Months Ended | ||
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Mar. 31, 2014
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Mar. 31, 2013
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Mar. 31, 2012
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Officer Medical Plan
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Defined Benefit Plan Disclosure [Line Items] | |||
Weighted-average discount rate for benefit obligation | 4.75% | 4.75% | 5.00% |
Retired Officers' Bonus Plan
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Defined Benefit Plan Disclosure [Line Items] | |||
Weighted-average discount rate for benefit obligation | 4.75% | 4.75% | 5.00% |