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
Sep. 30, 2017
Dec. 31, 2016
Accrual loans, past due $ 26,725 $ 8,336
Non-accrual 12,356 10,624
Current 5,589,684 4,892,810
Loans 5,628,765 4,911,770 [1]
Financing Receivables, 30 to 59 Days Past Due [Member]    
Accrual loans, past due 7,858 1,076
Financing Receivables, 60 to 89 Days Past Due [Member]    
Accrual loans, past due 16,361 997
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]    
Accrual loans, past due 2,506 6,263
Commercial Real Estate Portfolio Segment [Member]    
Accrual loans, past due 19,506 760
Non-accrual 5,798 7,282
Current 2,198,606 1,974,225
Loans 2,223,910 1,982,267
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]    
Accrual loans, past due 5,317 710
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]    
Accrual loans, past due 12,081 40
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]    
Accrual loans, past due 2,108 10
Real Estate Portfolio Segment[Member]    
Accrual loans, past due 5,419 7,403
Non-accrual 4,235 74
Current 2,869,599 2,531,730
Loans 2,879,253 2,539,207
Real Estate Portfolio Segment[Member] | Construction Loans [Member]    
Accrual loans, past due 1,615 59
Non-accrual 2,285 3,268
Current 463,938 331,758
Loans 467,838 335,085
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]    
Accrual loans, past due 3,664 6,208
Non-accrual 2,497
Current 1,317,222 1,165,511
Loans 1,323,383 1,171,719
Real Estate Portfolio Segment[Member] | One to Four Family [Member]    
Accrual loans, past due 1,755 289
Non-accrual 1,308 74
Current 590,117 536,442
Loans 593,180 536,805
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]    
Accrual loans, past due 906
Non-accrual 430
Current 962,260 829,777
Loans 962,690 830,683
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member]    
Accrual loans, past due 1,442 255
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Construction Loans [Member]    
Accrual loans, past due 997 59
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Owner Occupied Commercial [Member]    
Accrual loans, past due 310
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | One to Four Family [Member]    
Accrual loans, past due 1,132 160
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Other Mortgages [Member]    
Accrual loans, past due 95
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member]    
Accrual loans, past due 3,649 940
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Construction Loans [Member]    
Accrual loans, past due 618
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Owner Occupied Commercial [Member]    
Accrual loans, past due 3,354
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | One to Four Family [Member]    
Accrual loans, past due 295 129
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 328 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 328
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]    
Accrual loans, past due 185 114
Non-accrual 38
Current 57,541 55,097
Loans 57,764 55,211
Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]    
Accrual loans, past due 102 52
Consumer Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]    
Accrual loans, past due 13 17
Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]    
Accrual loans, past due $ 70 $ 45
[1] Derived from audited financial statements