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Amortization of Intangible Assets (Detail) | 12 Months Ended
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Mar. 31, 2018
Branch network |
Acquired Finite-Lived Intangible Assets [Line Items] |
Useful lives (years) | 6 years
Amortization method | Straight-line
Customer list |
Acquired Finite-Lived Intangible Assets [Line Items] |
Useful lives (years) | 2 years
Amortization method | Straight-line
Core deposit |
Acquired Finite-Lived Intangible Assets [Line Items] |
Useful lives (years) | 5 years
Amortization method | Straight-line
Favorable leases |
Acquired Finite-Lived Intangible Assets [Line Items] |
Amortization method | Straight-line
Favorable leases | Minimum |
Acquired Finite-Lived Intangible Assets [Line Items] |
Useful lives (years) | 1 year
Favorable leases | Maximum |
Acquired Finite-Lived Intangible Assets [Line Items] |
Useful lives (years) | 15 years

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Useful life of finite-lived intangible assets, 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 The amortization method of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar either by their nature or by their use in the operations of a company. The straight-line method is the preferred amortization method, unless another method better reflects the pattern in which the asset is consumed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 35 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=108376495&loc=d3e15372-109273 + Details
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