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FAIR VALUE MEASUREMENTS: Fair Value, Option, Quantitative Disclosures (Details 4) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Estimated Fair Value | Cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	$ 64,613	$ 55,400
Estimated Fair Value | Certificates of deposit held for investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	11,108	16,959
Estimated Fair Value | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	478	503
Estimated Fair Value | Investment securities available for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	200,214	150,690
Estimated Fair Value | Investment securities held to maturity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	66	76
Estimated Fair Value | Loans receivable, net
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	731,996	571,068
Estimated Fair Value | FHLB stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	1,181	1,060
Estimated Fair Value | Demand and savings deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Liabilities	830,258	660,421
Estimated Fair Value | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Liabilities	148,574	119,143
Estimated Fair Value | Junior subordinated debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Liabilities	13,284	7,705
Estimated Fair Value | Capital lease obligation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Liabilities	2,454	2,475
Carrying Amount | Cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	64,613	55,400
Carrying Amount | Certificates of deposit held for investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	11,042	16,769
Carrying Amount | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	478	503
Carrying Amount | Investment securities available for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	200,214	150,690
Carrying Amount | Investment securities held to maturity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	64	75
Carrying Amount | Loans receivable, net
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	768,904	614,934
Carrying Amount | FHLB stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	1,181	1,060
Carrying Amount | Demand and savings deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Liabilities	830,258	660,421
Carrying Amount | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Liabilities	149,800	119,382
Carrying Amount | Junior subordinated debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Liabilities	26,390	22,681
Carrying Amount | Capital lease obligation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Liabilities	2,454	2,475
Level 1 | Cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	64,613	55,400
Level 1 | Demand and savings deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Liabilities	830,258	660,421
Level 2 | Certificates of deposit held for investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	11,108	16,959
Level 2 | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	478	503
Level 2 | Investment securities available for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	200,214	148,882
Level 2 | Investment securities held to maturity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	66	76
Level 2 | FHLB stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	1,181	1,060
Level 2 | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Liabilities	148,574	119,143
Level 2 | Capital lease obligation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Liabilities	2,454	2,475
Level 3 | Investment securities available for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets		1,808
Level 3 | Loans receivable, net
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Assets	731,996	571,068
Level 3 | Junior subordinated debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of Liabilities	$ 13,284	$ 7,705

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