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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Detail Textuals) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2017 USD ($) Branch Segment | Feb. 17, 2017 USD ($) | Mar. 31, 2016 USD ($) | Mar. 31, 2015
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Percentage of noncontrolling interest held |  |  |  | 10.00%
Ownership percentage |  |  | 100.00% | 90.00%
Number of operating segments | Segment | 2 |  |  |
Assets Held-in-trust | $ 425,900,000 |  | $ 389,100,000 |
Number of branches in rural and suburban communities | Branch | 19 |  |  |
Core Deposit Intangibles |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Estimated amortized period of Core Deposit Intangibles | 10 years |  |  |
Core Deposit Intangibles, gross | $ 1,360,000 |  |  |
Accumulated amortization | 27,000 |  |  |
Estimated amortization expense of Core Deposit Intangibles for fiscal years ended March 31, 2018 | 232,000 |  |  |
Estimated amortization expense of Core Deposit Intangibles for fiscal years ended March 31, 2019 | 183,000 |  |  |
Estimated amortization expense of Core Deposit Intangibles for fiscal years ended March 31, 2020 | 160,000 |  |  |
Estimated amortization expense of Core Deposit Intangibles for fiscal years ended March 31, 2021 | 140,000 |  |  |
Estimated amortization expense of Core Deposit Intangibles for fiscal years ended March 31, 2022 | 125,000 |  |  |
Estimated amortization expense of Core Deposit Intangibles, after five year | $ 495,000 |  |  |
Building and improvements |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives | up to 45 years |  |  |
Furniture and equipment |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives | Three to twenty years |  |  |
Leasehold improvements |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives | Fifteen to twenty-five years |  |  |
Estimated Fair Value | Merchants Bancorp |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
CDI |  | $ 1,363,000 |  |

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