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Business Combinations - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Oct. 01, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Business Acquisition [Line Items] |  |  |
Total assets |  | $ 180,825 | $ 0
Total liabilities assumed |  | 154,625 | $ 0
Addition as a result of the South Sound Merger (see Note 2) |  | $ 8,970 |
South Sound Merger |  |  |
Business Acquisition [Line Items] |  |  |
Total merger consideration | $ 35,170 |  |
Addition as a result of the South Sound Merger (see Note 2) | 8,970 |  |
Book Value | South Sound Merger |  |  |
Business Acquisition [Line Items] |  |  |
Cash and cash equivalents | 21,187 |  |
CDs held for investment | 2,973 |  |
FHLB stock | 205 |  |
Investment securities | 24,913 |  |
Loans receivable | 123,627 |  |
Premises and equipment | 3,225 |  |
OREO | 25 |  |
Accrued interest receivable | 554 |  |
BOLI | 2,629 |  |
CDI | 0 |  |
MSRs | 285 |  |
Other assets | 883 |  |
Total assets | 180,506 |  |
Deposits | 151,378 |  |
Other liabilities and accrued expenses | 3,087 |  |
Total liabilities assumed | 154,465 |  |
Total identifiable net assets acquired | 26,041 |  |
Fair Value Adjustment | South Sound Merger |  |  |
Business Acquisition [Line Items] |  |  |
Cash and cash equivalents | 0 |  |
CDs held for investment | 0 |  |
FHLB stock | 0 |  |
Investment securities | (189) |  |
Loans receivable | (2,083) |  |
Premises and equipment | 112 |  |
OREO | 0 |  |
Accrued interest receivable | 0 |  |
BOLI | 0 |  |
CDI | 2,483 |  |
MSRs | (4) |  |
Other assets | 0 |  |
Total assets | 319 |  |
Deposits | 160 |  |
Other liabilities and accrued expenses | 0 |  |
Total liabilities assumed | 160 |  |
Total identifiable net assets acquired | 159 |  |
Estimated Fair Value | South Sound Merger |  |  |
Business Acquisition [Line Items] |  |  |
Total merger consideration | 35,170 |  |
Cash and cash equivalents | 21,187 |  |
CDs held for investment | 2,973 |  |
FHLB stock | 205 |  |
Investment securities | 24,724 |  |
Loans receivable | 121,544 |  |
Premises and equipment | 3,337 |  |
OREO | 25 |  |
Accrued interest receivable | 554 |  |
BOLI | 2,629 |  |
CDI | 2,483 |  |
MSRs | 281 |  |
Other assets | 883 |  |
Total assets | 180,825 |  |
Deposits | 151,538 |  |
Other liabilities and accrued expenses | 3,087 |  |
Total liabilities assumed | 154,625 |  |
Total identifiable net assets acquired | 26,200 |  |
Addition as a result of the South Sound Merger (see Note 2) | $ 8,970 |  |

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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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