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INVESTMENT SECURITIES (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Mar. 31, 2018
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |  |
Amortized Cost |  | $ 207,268 | $ 219,427
Gross Unrealized Gains |  | 9 | 5
Gross Unrealized Losses |  | (7,177) | (6,211)
Estimated Fair Value |  | 200,100 | 213,221
Municipal securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Amortized Cost |  | 9,003 | 9,041
Gross Unrealized Gains |  | 0 | 0
Gross Unrealized Losses |  | (308) | (309)
Estimated Fair Value |  | 8,695 | 8,732
Agency securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Amortized Cost |  | 17,416 | 22,412
Gross Unrealized Gains |  | 3 | 1
Gross Unrealized Losses |  | (312) | (311)
Estimated Fair Value |  | 17,107 | 22,102
Real estate mortgage investment conduits |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Amortized Cost | [1] | 46,265 | 48,310
Gross Unrealized Gains | [1] | 2 | 0
Gross Unrealized Losses | [1] | (1,594) | (1,355)
Estimated Fair Value | [1] | 44,673 | 46,955
Residential mortgage-backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Amortized Cost | [1] | 87,782 | 91,786
Gross Unrealized Gains | [1] | 4 | 3
Gross Unrealized Losses | [1] | (3,120) | (2,715)
Estimated Fair Value | [1] | 84,666 | 89,074
Other mortgage-backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Amortized Cost | [2] | 46,802 | 47,878
Gross Unrealized Gains | [2] | 0 | 1
Gross Unrealized Losses | [2] | (1,843) | (1,521)
Estimated Fair Value | [2] | $ 44,959 | $ 46,358
[1] | Comprised of Federal Home Loan Mortgage Corporation ("FHLMC"), Federal National Mortgage Association ("FNMA") and Ginnie Mae ("GNMA") issued securities.
[2] | Comprised of U.S. Small Business Administration ("SBA") issued securities and commercial real estate ("CRE") secured securities issued by FNMA.

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 + Details
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