The amount of borrowings assumed which have been recognized as of the acquisition date.

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The amount of business combination recognized identifiable assets acquired and liabilities assumed core deposit intangibles.

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The amount of business combination recognized identifiable assets acquired and liabilities assumed deposits.

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The amount of business combination recognized identifiable assets acquired and liabilities assumed other assets.

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The amount of business combination recognized identifiable assets acquired and liabilities assumed other liabilities.

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The amount of other real estate owned recognized as of the acquisition date.

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The percentage of pre-tax discount of time deposits to core deposits.

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity.

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Amount of assets acquired at the acquisition date.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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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.

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Amount of deferred tax asset attributable to deductible temporary differences and carryforwards acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount of liabilities assumed at the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount of time deposit liabilities, including certificates of deposit.

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Business Combination - Estimated Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands		12 Months Ended
	Nov. 15, 2018	Dec. 31, 2018	Dec. 31, 2019
Business Acquisition [Line Items]
Bargain purchase gain		$ 7,414
Certificates of deposit			$ 551,500
Anchor Bancorp
Business Acquisition [Line Items]
Cash and cash equivalents	$ 54,558
Securities available-for-sale	19,555
Loans receivable, net	356,275
Premises and equipment	11,765
Other real estate owned ("OREO")	689
Deferred tax asset	739
Mortgage servicing rights	782
Core deposit intangible ("CDI")	5,251
Other assets	25,249
Total assets acquired	474,863
Deposits	356,811	$ 321,100	$ 299,000
Borrowings	36,718
Other liabilities	9,349
Total liabilities assumed	402,878
Total fair value of identifiable net assets	71,985
Bargain purchase gain	$ 7,414
Pre-tax discount of time deposits to core deposits (as a percent)	0.65%
Certificates of deposit	$ 162,900
Acquired Book Value \| Anchor Bancorp
Business Acquisition [Line Items]
Cash and cash equivalents	54,558
Securities available-for-sale	19,609
Loans receivable, net	361,596
Premises and equipment	8,411
Other real estate owned ("OREO")	689
Deferred tax asset	4,097
Mortgage servicing rights	218
Other assets	25,231
Total assets acquired	474,409
Deposits	357,863
Borrowings	37,000
Other liabilities	9,286
Total liabilities assumed	404,149
Fair Value Adjustments \| Anchor Bancorp
Business Acquisition [Line Items]
Securities available-for-sale	(54)
Loans receivable, net	(5,321)
Premises and equipment	3,354
Deferred tax asset	(3,358)
Mortgage servicing rights	564
Core deposit intangible ("CDI")	5,251
Other assets	18
Total assets acquired	454
Deposits	(1,052)
Borrowings	(282)
Other liabilities	63
Total liabilities assumed	(1,271)
Carrying Amount \| Anchor Bancorp
Business Acquisition [Line Items]
Cash and cash equivalents	54,558
Securities available-for-sale	19,555
Loans receivable, net	356,275
Premises and equipment	11,765
Other real estate owned ("OREO")	689
Deferred tax asset	739
Mortgage servicing rights	782
Core deposit intangible ("CDI")	5,251
Other assets	25,249
Total assets acquired	474,863
Deposits	356,811
Borrowings	36,718
Other liabilities	9,349
Total liabilities assumed	$ 402,878
Interest Expense [Member] \| Anchor Bancorp
Business Acquisition [Line Items]
Estimated amortization period	10 years