ALLOWANCE FOR LOAN LOSSES: Schedule of reconciliation of the allowance for loan losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 10,063	$ 10,113	$ 9,885	$ 10,762
Provision for (recapture of) loan losses				(800)
Charge-offs	(132)	(87)	(247)	(161)
Recoveries	358	147	651	372
Ending balance	10,289	10,173	10,289	10,173
Commercial Business
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	909	1,360	1,048	1,263
Provision for (recapture of) loan losses	131	160	(19)	239
Charge-offs	(1)		(1)
Recoveries	205	6	216	24
Ending balance	1,244	1,526	1,244	1,526
Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,689	4,293	4,273	4,268
Provision for (recapture of) loan losses	162	(141)	576	(116)
Charge-offs
Recoveries			2
Ending balance	4,851	4,152	4,851	4,152
Land
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	154	490	325	539
Provision for (recapture of) loan losses	(113)	(134)	(472)	(306)
Charge-offs
Recoveries	132	107	320	230
Ending balance	173	463	173	463
Multi-family
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	613	494	712	348
Provision for (recapture of) loan losses	(284)	9	(383)	155
Charge-offs
Recoveries
Ending balance	329	503	329	503
Real estate construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	727	286	416	769
Provision for (recapture of) loan losses	94	84	405	(405)
Charge-offs
Recoveries				6
Ending balance	821	370	821	370
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,290	2,329	2,403	2,548
Provision for (recapture of) loan losses	(13)	175	(103)	(48)
Charge-offs	(131)	(87)	(246)	(161)
Recoveries	21	34	113	112
Ending balance	2,167	2,451	2,167	2,451
Unallocated
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	681	861	708	1,027
Provision for (recapture of) loan losses	23	(153)	(4)	(319)
Charge-offs
Recoveries
Ending balance	$ 704	$ 708	$ 704	$ 708

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
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Amount of expense related to estimated loss from loan and lease transactions.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 225
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