Loan Receivable and Allowance for Loan and Lease Losses Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Mar. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance	$ 10,989	$ 19,821	$ 19,821
Deductions (Charges)	(1,539)	(1,443)	5,903
Valuation Allowances and Reserves, Recoveries	36	5	398
Provision for loan losses	831	224	(3,327)
Loans and Leases Receivable, Allowance	10,317	18,607	10,989
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	8,118	17,350	8,678
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	2,199	1,257	2,311
Loans and Leases Receivable, Net of Deferred Income	355,667	389,900	370,122
Financing Receivable, Collectively Evaluated for Impairment	330,883	360,022	339,100
Financing Receivable, Individually Evaluated for Impairment	24,784	29,878	31,022
One- to four family loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance	3,496	4,305	4,305
Deductions (Charges)	(617)	(203)	2,103
Valuation Allowances and Reserves, Recoveries	0	0	15
Provision for loan losses	1,416	694	1,279
Loans and Leases Receivable, Allowance	4,295	4,796	3,496
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	3,734	4,250	3,179
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	561	546	317
Loans and Leases Receivable, Net of Deferred Income	72,099	66,236	73,987
Financing Receivable, Collectively Evaluated for Impairment	64,788	62,315	67,619
Financing Receivable, Individually Evaluated for Impairment	7,311	3,921	6,368
Multifamily Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance	408	5,409	5,409
Deductions (Charges)	0	(109)	226
Valuation Allowances and Reserves, Recoveries	10	0	91
Provision for loan losses	(173)	(1,529)	(4,866)
Loans and Leases Receivable, Allowance	245	3,771	408
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	246	3,710	409
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	61	0
Loans and Leases Receivable, Net of Deferred Income	57,572	75,102	56,607
Financing Receivable, Collectively Evaluated for Impairment	56,956	74,111	55,991
Financing Receivable, Individually Evaluated for Impairment	616	991	616
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance	3,298	6,709	6,709
Deductions (Charges)	(512)	(1,129)	1,148
Valuation Allowances and Reserves, Recoveries	0	0	0
Provision for loan losses	205	2,271	(2,263)
Loans and Leases Receivable, Allowance	2,991	7,851	3,298
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,820	7,499	3,103
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,171	352	194
Loans and Leases Receivable, Net of Deferred Income	186,688	198,271	202,771
Financing Receivable, Collectively Evaluated for Impairment	176,501	186,489	186,336
Financing Receivable, Individually Evaluated for Impairment	10,187	11,782	16,435
Construction Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance	0	1,532	1,532
Deductions (Charges)	0	0	151
Valuation Allowances and Reserves, Recoveries	0	0	22
Provision for loan losses	167	(1,408)	(1,403)
Loans and Leases Receivable, Allowance	167	124	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	167	124	0
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0	0
Loans and Leases Receivable, Net of Deferred Income	5,759	8,752	1,230
Financing Receivable, Collectively Evaluated for Impairment	5,100	1,502	0
Financing Receivable, Individually Evaluated for Impairment	659	7,250	1,230
Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance	3,759	1,786	1,786
Deductions (Charges)	(393)	0	2,274
Valuation Allowances and Reserves, Recoveries	24	2	265
Provision for loan losses	(787)	244	3,982
Loans and Leases Receivable, Allowance	2,603	2,032	3,759
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,136	1,734	1,959
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	467	298	1,800
Loans and Leases Receivable, Net of Deferred Income	33,302	41,109	35,277
Financing Receivable, Collectively Evaluated for Impairment	27,291	35,175	28,904
Financing Receivable, Individually Evaluated for Impairment	6,011	5,934	6,373
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance	28	80	80
Deductions (Charges)	(17)	(2)	1
Valuation Allowances and Reserves, Recoveries	2	3	5
Provision for loan losses	3	(48)	(56)
Loans and Leases Receivable, Allowance	16	33	28
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	15	33	28
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0	0
Loans and Leases Receivable, Net of Deferred Income	247	430	250
Financing Receivable, Collectively Evaluated for Impairment	247	430	250
Financing Receivable, Individually Evaluated for Impairment	$ 0	$ 0	$ 0