Annual report pursuant to Section 13 and 15(d)

Note 4 - Loans - Loans Categorized by Past Due Status (Details)

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Note 4 - Loans - Loans Categorized by Past Due Status (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Accrual loans, past due $ 18,439 $ 8,336
Non-accrual 10,765 10,624
Current 5,822,057 4,892,810
Loans 5,851,261 4,911,770
Financing Receivables, 30 to 59 Days Past Due [Member]    
Accrual loans, past due 7,143 1,076
Financing Receivables, 60 to 89 Days Past Due [Member]    
Accrual loans, past due 11,236 997
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]    
Accrual loans, past due 60 6,263
Commercial Real Estate Portfolio Segment [Member]    
Accrual loans, past due 7,124 760
Non-accrual 9,712 7,282
Current 2,262,530 1,974,225
Loans 2,279,366 1,982,267
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]    
Accrual loans, past due 1,410 710
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]    
Accrual loans, past due 5,702 40
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]    
Accrual loans, past due 12 10
Real Estate Portfolio Segment[Member]    
Accrual loans, past due 10,060 7,403
Non-accrual 1,015 74
Current 2,917,733 2,531,730
Loans 2,928,808 2,539,207
Real Estate Portfolio Segment[Member] | Construction Loans [Member]    
Accrual loans, past due 1,053 59
Non-accrual 3,268
Current 579,821 331,758
Loans 580,874 335,085
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]    
Accrual loans, past due 3,664 6,208
Non-accrual 556
Current 1,324,446 1,165,511
Loans 1,328,666 1,171,719
Real Estate Portfolio Segment[Member] | One to Four Family [Member]    
Accrual loans, past due 1,280 289
Non-accrual 459 74
Current 601,324 536,442
Loans 603,063 536,805
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]    
Accrual loans, past due 5,116 906
Non-accrual
Current 991,963 829,777
Loans 997,079 830,683
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member]    
Accrual loans, past due 5,546 255
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Construction Loans [Member]    
Accrual loans, past due 56 59
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Owner Occupied Commercial [Member]    
Accrual loans, past due
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | One to Four Family [Member]    
Accrual loans, past due 430 160
Real Estate Portfolio Segment[Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Other Mortgages [Member]    
Accrual loans, past due 5,116 95
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member]    
Accrual loans, past due 4,514 940
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Construction Loans [Member]    
Accrual loans, past due 997
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Owner Occupied Commercial [Member]    
Accrual loans, past due 3,664
Real Estate Portfolio Segment[Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | One to Four Family [Member]    
Accrual loans, past due 850 129
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]    
Accrual loans, past due 202 114
Non-accrual 38
Current 61,973 55,097
Loans 62,213 55,211
Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]    
Accrual loans, past due 131 52
Consumer Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]    
Accrual loans, past due 23 17
Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]    
Accrual loans, past due $ 48 $ 45