Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Loans - Loans Categorized by Past Due Status (Details)

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Note 5 - Loans - Loans Categorized by Past Due Status (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Current $ 5,319,467 $ 4,892,810
Loans 5,343,688 4,911,770 [1]
Accrual loans, past due 14,258 8,336
Non-accrual 9,963 10,624
Financing Receivables, 30 to 59 Days Past Due [Member]    
Accrual loans, past due 12,214 1,076
Financing Receivables, 60 to 89 Days Past Due [Member]    
Accrual loans, past due 1,028 997
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]    
Accrual loans, past due 1,016 6,263
Commercial Real Estate Portfolio Segment [Member]    
Current 2,111,485 1,974,225
Loans 2,123,498 1,982,267
Accrual loans, past due 7,596 760
Non-accrual 4,417 7,282
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]    
Accrual loans, past due 6,311 710
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]    
Accrual loans, past due 317 40
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]    
Accrual loans, past due 968 10
Real Estate Portfolio Segment[Member]    
Current 2,759,842 2,531,730
Loans 2,769,568 2,539,207
Accrual loans, past due 6,557 7,403
Non-accrual 3,169 74
Real Estate Portfolio Segment[Member] | Construction Loans [Member]    
Current 393,021 331,758
Loans 395,398 335,085
Accrual loans, past due 59
Non-accrual 2,377 3,268
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]    
Current 1,265,913 1,165,511
Loans 1,272,659 1,171,719
Accrual loans, past due 4,498 6,208
Non-accrual 2,248
Real Estate Portfolio Segment[Member] | One to Four Family [Member]    
Current 563,121 536,442
Loans 565,121 536,805
Accrual loans, past due 1,079 289
Non-accrual 921 74
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]    
Current 930,808 829,777
Loans 931,788 830,683
Accrual loans, past due 980 906
Non-accrual
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member]    
Accrual loans, past due 5,854 255
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Construction Loans [Member]    
Accrual loans, past due 59
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Owner Occupied Commercial [Member]    
Accrual loans, past due 4,498
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | One to Four Family [Member]    
Accrual loans, past due 376 160
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Other Mortgages [Member]    
Accrual loans, past due 980 95
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member]    
Accrual loans, past due 703 940
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Construction Loans [Member]    
Accrual loans, past due
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Owner Occupied Commercial [Member]    
Accrual loans, past due
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | One to Four Family [Member]    
Accrual loans, past due 703 129
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Other Mortgages [Member]    
Accrual loans, past due 811
Real Estate Portfolio Segment[Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]    
Accrual loans, past due 6,208
Real Estate Portfolio Segment[Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Construction Loans [Member]    
Accrual loans, past due
Real Estate Portfolio Segment[Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Owner Occupied Commercial [Member]    
Accrual loans, past due 6,208
Real Estate Portfolio Segment[Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | One to Four Family [Member]    
Accrual loans, past due
Real Estate Portfolio Segment[Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Other Mortgages [Member]    
Accrual loans, past due
Consumer Portfolio Segment [Member]    
Current 55,119 55,097
Loans 55,224 55,211
Accrual loans, past due 105 114
Non-accrual
Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]    
Accrual loans, past due 49 52
Consumer Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]    
Accrual loans, past due 8 17
Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]    
Accrual loans, past due $ 48 $ 45
[1] Derived from audited financial statements