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Organization and Summary of Significant Accounting Policies (PBM Activites) (Details) - USD ($)
 3 Months Ended 12 Months Ended 84 Months Ended
Dec. 31, 2014
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2011
Recourse Liability [Roll Forward]          
MSA net carrying value   $ 396,000 $ 295,000    
Mortgage servicing assets, fair value   470,000 357,000 $ 395,000  
Interest-only strips, fair value   $ 63,000 62,000    
Minimum          
Recourse Liability [Roll Forward]          
Refund of loan sale premium, term for loan repayment   3 months      
Maximum          
Recourse Liability [Roll Forward]          
Refund of loan sale premium, term for loan repayment   6 months      
Mortgage Partnership Finance (MPF) Program          
Recourse Liability [Roll Forward]          
Recourse liability, beginning balance   $ 274,000      
Recourse liability, ending balance   267,000 274,000    
Other Investors          
Recourse Liability [Roll Forward]          
Recourse liability, beginning balance   600,000      
Recourse liability, ending balance   500,000 600,000    
Provident Bank Mortgage (PBM)          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Repurchases of single-family loans   1,600,000 437,000 1,400,000.0  
Payments for settlement of repurchase requests   0 666,000 5,600,000  
Recourse Liability [Roll Forward]          
Recourse liability, beginning balance   904,000 2,111,000    
Recourse recovery   (86,000) (469,000)    
Net settlements in lieu of loan repurchases   (50,000) (738,000)    
Recourse liability, ending balance   768,000 904,000 2,111,000  
Loan sale premium refunds   2,000,000 750,000 299,000  
Unrealized gain on interest-only strips, net of tax   36,000 35,000    
Provident Bank Mortgage (PBM) | Legacy Loan Investor          
Recourse Liability [Roll Forward]          
Net settlements in lieu of loan repurchases $ (1,500,000)        
Provident Bank Mortgage (PBM) | Loan Sale Volume          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Concentration risk (percentage)         39.00%
Provident Bank Mortgage (PBM) | Recourse Claims Paid Prior to Settlement          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Concentration risk (percentage)         64.00%
Provident Bank Mortgage (PBM) | Prepaid Expenses and Other Assets          
Recourse Liability [Roll Forward]          
Interest-only strips, fair value   63,000 62,000    
Provident Bank Mortgage (PBM) | Recourse Liability          
Recourse Liability [Roll Forward]          
Recourse liability, beginning balance   113,000      
Recourse liability, ending balance   $ 653,000 113,000    
Provident Bank Mortgage (PBM) | Minimum          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loan repurchase requirement, period loan is past due   90 days      
Provident Bank Mortgage (PBM) | Maximum          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loan repurchase requirement, period following loan funding date   120 days      
Provident Bank Mortgage (PBM) | Mortgage Partnership Finance (MPF) Program          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Recourse liability, portion covered by FHLB (percent)   0.04%      
Loans serviced under MPF program   $ 28,200,000 38,600,000    
Net loss on recourse liabilities   32,000 139,000 $ 194,000  
Recourse Liability [Roll Forward]          
Recourse liability, beginning balance   274,000      
Recourse liability, ending balance   267,000 274,000    
Provident Bank Mortgage (PBM) | Other Investors          
Recourse Liability [Roll Forward]          
Recourse liability, beginning balance   600,000      
Recourse liability, ending balance   $ 500,000 $ 600,000