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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Detail Textuals 1) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Feb. 17, 2017
Summary Of Significant Accounting Policies [Line Items] |  |  |
Assets Held-in-trust | $ 484,300,000 | $ 425,900,000 |
Early adoption of ASU 2018-02 |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Early adoption of reclassification of tax effects from AOCI to retained earnings | $ 342,000 |  |
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 | 1,360,000 |
Accumulated amortization | 260,000 | $ 27,000 |
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 for fiscal years ended March 31, 2023 | 116,000 |  |
Estimated amortization expense of Core Deposit Intangibles, thereafter | $ 379,000 |  |
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, or estimated lease term if shorter |  |
Estimated Fair Value | Merchants Bancorp |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
CDI |  |  | $ 1,363,000

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