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Loans Receivable and Allowance for Loan Losses (Non-Accruing Loans) (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Non-accrual loans |  | $ 10,763 | $ 13,036
Loans Receivable >90 Days and Accruing |  | 1,093 | 315
Originated loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Non-accrual loans |  | 7,660 | 9,807
Loans Receivable >90 Days and Accruing |  | 846 |
Originated loans [Member] | Residential [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Non-accrual loans |  | 1,480 | 2,545
Loans Receivable >90 Days and Accruing |  |  |
Originated loans [Member] | Commercial and Multi-family [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Non-accrual loans |  | 5,578 | 6,762
Loans Receivable >90 Days and Accruing |  | 125 |
Originated loans [Member] | Construction [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans Receivable >90 Days and Accruing |  |  |
Originated loans [Member] | Commercial Business [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Non-accrual loans | [1] | 163 | 299
Loans Receivable >90 Days and Accruing | [1] | 599 |
Originated loans [Member] | Home Equity [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Non-accrual loans | [2] | 397 | 201
Loans Receivable >90 Days and Accruing | [2] | 122 |
Originated loans [Member] | Consumer [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Non-accrual loans |  | 42 |
Loans Receivable >90 Days and Accruing |  |  |
Acquired loans recorded at fair value [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Non-accrual loans |  | 3,103 | 3,229
Loans Receivable >90 Days and Accruing |  | 247 | 315
Acquired loans recorded at fair value [Member] | Residential [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Non-accrual loans |  | 2,474 | 2,372
Loans Receivable >90 Days and Accruing |  |  | 315
Acquired loans recorded at fair value [Member] | Commercial and Multi-family [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Non-accrual loans |  | 590 | 850
Loans Receivable >90 Days and Accruing |  |  |
Acquired loans recorded at fair value [Member] | Construction [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans Receivable >90 Days and Accruing |  | 247 |
Acquired loans recorded at fair value [Member] | Commercial Business [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans Receivable >90 Days and Accruing | [1] |  |
Acquired loans recorded at fair value [Member] | Home Equity [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Non-accrual loans |  | 39 | 7
Loans Receivable >90 Days and Accruing | [2] |  |
Acquired loans recorded at fair value [Member] | Consumer [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans Receivable >90 Days and Accruing |  |  |
Acquired loans with deteriorated credit [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Non-accrual loans |  | 11,600 |
Loans Receivable >90 Days and Accruing |  |  |
Acquired loans with deteriorated credit [Member] | Residential [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans Receivable >90 Days and Accruing |  |  |
Acquired loans with deteriorated credit [Member] | Commercial and Multi-family [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans Receivable >90 Days and Accruing |  |  |
Acquired loans with deteriorated credit [Member] | Construction [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans Receivable >90 Days and Accruing |  |  |
Acquired loans with deteriorated credit [Member] | Commercial Business [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans Receivable >90 Days and Accruing | [1] |  |
Acquired loans with deteriorated credit [Member] | Home Equity [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans Receivable >90 Days and Accruing | [2] |  |
Acquired loans with deteriorated credit [Member] | Consumer [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans Receivable >90 Days and Accruing |  |  |
[1] | Includes business lines of credit.
[2] | Includes home equity lines of credit.

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