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Note 3 - Loans and Allowance for Loan Losses - Retail Credit Exposure (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Loans	$ 2,933,013,000	$ 2,753,085,000
Retail Portfolio Segment [Member]
Loans	424,646,000	392,979,000
Retail Portfolio Segment [Member] | Home Equity and Other [Member]
Loans	78,552,000	85,439,000
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member]
Loans	346,094,000	307,540,000
Originated Loan [Member]
Loans	2,690,177,000	2,452,446,000
Originated Loan [Member] | Retail Portfolio Segment [Member]
Loans	348,380,000	300,448,000
Originated Loan [Member] | Retail Portfolio Segment [Member] | Home Equity and Other [Member]
Loans	63,026,000	65,023,000
Originated Loan [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member]
Loans	285,354,000	235,425,000
Acquired Loan [Member]
Loans	242,836,000	300,639,000
Acquired Loan [Member] | Retail Portfolio Segment [Member]
Loans	76,266,000	92,531,000
Acquired Loan [Member] | Retail Portfolio Segment [Member] | Home Equity and Other [Member]
Loans	15,526,000	20,416,000
Acquired Loan [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member]
Loans	$ 60,740,000	$ 72,115,000

X

- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5074-111524

+ Details

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Balance Type:	debit
Period Type:	instant

X

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