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Note 4 - Loans and Allowance for Loan Losses - Retail Credit Exposure (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Loans	$ 2,378,620,000	$ 2,277,727,000
Retail Portfolio Segment [Member]
Loans	313,273,000	331,031,000
Retail Portfolio Segment [Member] | Home Equity and Other [Member]
Loans	118,047,000	140,646,000
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member]
Loans	195,226,000	190,385,000
Originated Loan [Member]
Loans	1,884,548,000	1,616,587,000	$ 1,246,116,000
Originated Loan [Member] | Retail Portfolio Segment [Member]
Loans	155,650,000	123,071,000	$ 92,927,000
Originated Loan [Member] | Retail Portfolio Segment [Member] | Home Equity and Other [Member]
Loans	69,831,000	67,816,000
Originated Loan [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member]
Loans	85,819,000	55,255,000
Acquired Loan [Member]
Loans	494,072,000	661,140,000
Acquired Loan [Member] | Retail Portfolio Segment [Member]
Loans	157,623,000	207,960,000
Acquired Loan [Member] | Retail Portfolio Segment [Member] | Home Equity and Other [Member]
Loans	48,216,000	72,830,000
Acquired Loan [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member]
Loans	$ 109,407,000	$ 135,130,000

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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5074-111524

+ Details

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