Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Loans - Loans by Credit Quality Indicator (Details)

v3.7.0.1
Note 5 - Loans - Loans by Credit Quality Indicator (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Financing receivable, gross $ 5,151,984 $ 4,911,770
Pass [Member]    
Financing receivable, gross 5,034,116 4,782,964
Special Mention [Member]    
Financing receivable, gross 77,866 86,298
Substandard [Member]    
Financing receivable, gross 40,002 42,508
Doubtful [Member]    
Financing receivable, gross
Commercial Real Estate Portfolio Segment [Member]    
Financing receivable, gross 2,061,503 1,982,267
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]    
Financing receivable, gross 1,989,337 1,893,664
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]    
Financing receivable, gross 48,280 61,035
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]    
Financing receivable, gross 23,886 27,568
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]    
Financing receivable, gross
Real Estate Portfolio Segment[Member]    
Financing receivable, gross 2,689,794 2,539,207
Real Estate Portfolio Segment[Member] | Construction Loans [Member]    
Financing receivable, gross 345,777 335,085
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]    
Financing receivable, gross 1,262,578 1,171,719
Real Estate Portfolio Segment[Member] | One to Four Family [Member]    
Financing receivable, gross 554,261 536,805
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]    
Financing receivable, gross 872,955 830,683
Real Estate Portfolio Segment[Member] | Pass [Member]    
Financing receivable, gross 2,655,476 2,509,207
Real Estate Portfolio Segment[Member] | Pass [Member] | Construction Loans [Member]    
Financing receivable, gross 334,480 324,958
Real Estate Portfolio Segment[Member] | Pass [Member] | Owner Occupied Commercial [Member]    
Financing receivable, gross 1,248,552 1,158,615
Real Estate Portfolio Segment[Member] | Pass [Member] | One to Four Family [Member]    
Financing receivable, gross 549,371 531,868
Real Estate Portfolio Segment[Member] | Pass [Member] | Other Mortgages [Member]    
Financing receivable, gross 857,553 818,724
Real Estate Portfolio Segment[Member] | Special Mention [Member]    
Financing receivable, gross 21,860 19,326
Real Estate Portfolio Segment[Member] | Special Mention [Member] | Construction Loans [Member]    
Financing receivable, gross 7,639 5,861
Real Estate Portfolio Segment[Member] | Special Mention [Member] | Owner Occupied Commercial [Member]    
Financing receivable, gross 6,126 6,037
Real Estate Portfolio Segment[Member] | Special Mention [Member] | One to Four Family [Member]    
Financing receivable, gross 1,161 2,065
Real Estate Portfolio Segment[Member] | Special Mention [Member] | Other Mortgages [Member]    
Financing receivable, gross 14,573 11,224
Real Estate Portfolio Segment[Member] | Substandard [Member]    
Financing receivable, gross 12,458 10,674
Real Estate Portfolio Segment[Member] | Substandard [Member] | Construction Loans [Member]    
Financing receivable, gross 3,658 4,266
Real Estate Portfolio Segment[Member] | Substandard [Member] | Owner Occupied Commercial [Member]    
Financing receivable, gross 7,900 7,067
Real Estate Portfolio Segment[Member] | Substandard [Member] | One to Four Family [Member]    
Financing receivable, gross 3,729 2,872
Real Estate Portfolio Segment[Member] | Substandard [Member] | Other Mortgages [Member]    
Financing receivable, gross 829 735
Real Estate Portfolio Segment[Member] | Doubtful [Member]    
Financing receivable, gross
Real Estate Portfolio Segment[Member] | Doubtful [Member] | Construction Loans [Member]    
Financing receivable, gross
Real Estate Portfolio Segment[Member] | Doubtful [Member] | Owner Occupied Commercial [Member]    
Financing receivable, gross
Real Estate Portfolio Segment[Member] | Doubtful [Member] | One to Four Family [Member]    
Financing receivable, gross
Real Estate Portfolio Segment[Member] | Doubtful [Member] | Other Mortgages [Member]    
Financing receivable, gross
Consumer Portfolio Segment [Member]    
Financing receivable, gross 54,910 55,211
Consumer Portfolio Segment [Member] | Pass [Member]    
Financing receivable, gross 54,823 55,135
Consumer Portfolio Segment [Member] | Special Mention [Member]    
Financing receivable, gross 87 76
Consumer Portfolio Segment [Member] | Substandard [Member]    
Financing receivable, gross
Consumer Portfolio Segment [Member] | Doubtful [Member]    
Financing receivable, gross