Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Loans - Summary of Impaired Loans (Details)

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Note 5 - Loans - Summary of Impaired Loans (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Recorded investment, with no allowance $ 16,794 $ 16,296
Unpaid principal balance, with no allowance 17,741 23,069
Average recorded investment, with no allowance 16,995 23,013
Interest income recognized in period, with no allowance 206 901
Recorded investment, with an allowance 25,782 24,214
Unpaid principal balance, with an allowance 32,604 24,795
Related allowance 6,478 5,609
Average recorded investment, with an allowance 27,232 25,727
Interest income recognized in period, with an allowance 244 1,059
Recorded investment 42,576 40,510
Unpaid principal balance 50,345 47,864
Average recorded investment 44,227 48,740
Interest income recognized in period 450 1,960
Commercial Real Estate Portfolio Segment [Member]    
Recorded investment, with no allowance 6,176 10,036
Unpaid principal balance, with no allowance 6,953 16,639
Average recorded investment, with no allowance 6,165 16,417
Interest income recognized in period, with no allowance 71 571
Recorded investment, with an allowance 18,360 16,411
Unpaid principal balance, with an allowance 25,182 16,992
Related allowance 5,877 4,276
Average recorded investment, with an allowance 19,809 17,912
Interest income recognized in period, with an allowance 147 651
Recorded investment 24,536 26,447
Unpaid principal balance 32,135 33,631
Average recorded investment 25,974 34,329
Interest income recognized in period 218 1,222
Real Estate Portfolio Segment[Member]    
Recorded investment, with no allowance 9,952 5,648
Unpaid principal balance, with no allowance 10,119 5,814
Average recorded investment, with no allowance 10,159 5,891
Interest income recognized in period, with no allowance 126 296
Recorded investment, with an allowance 6,376 6,756
Unpaid principal balance, with an allowance 6,376 6,756
Related allowance 432 1,163
Average recorded investment, with an allowance 6,376 6,776
Interest income recognized in period, with an allowance 82 349
Recorded investment 16,328 12,404
Unpaid principal balance 16,495 12,570
Average recorded investment 16,535 12,667
Interest income recognized in period 208 645
Real Estate Portfolio Segment[Member] | Construction Loans [Member]    
Recorded investment, with no allowance 628 574
Unpaid principal balance, with no allowance 631 577
Average recorded investment, with no allowance 632 663
Interest income recognized in period, with no allowance 8 31
Recorded investment, with an allowance 997 997
Unpaid principal balance, with an allowance 997 997
Related allowance 120 120
Average recorded investment, with an allowance 997 997
Interest income recognized in period, with an allowance 14 56
Recorded investment 1,625 1,571
Unpaid principal balance 1,628 1,574
Average recorded investment 1,629 1,660
Interest income recognized in period 22 87
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]    
Recorded investment, with no allowance 2,604 2,640
Unpaid principal balance, with no allowance 2,771 2,806
Average recorded investment, with no allowance 2,789 2,875
Interest income recognized in period, with no allowance 38 159
Recorded investment, with an allowance 3,664 3,914
Unpaid principal balance, with an allowance 3,664 3,914
Related allowance 601
Average recorded investment, with an allowance 3,664 3,801
Interest income recognized in period, with an allowance 50 215
Recorded investment 6,268 6,554
Unpaid principal balance 6,435 6,720
Average recorded investment 6,453 6,676
Interest income recognized in period 88 374
Real Estate Portfolio Segment[Member] | One to Four Family [Member]    
Recorded investment, with no allowance 2,258 2,262
Unpaid principal balance, with no allowance 2,258 2,262
Average recorded investment, with no allowance 2,256 2,289
Interest income recognized in period, with no allowance 25 93
Recorded investment, with an allowance 850 980
Unpaid principal balance, with an allowance 850 980
Related allowance 151 281
Average recorded investment, with an allowance 850 1,113
Interest income recognized in period, with an allowance 12 54
Recorded investment 3,108 3,242
Unpaid principal balance 3,108 3,242
Average recorded investment 3,106 3,402
Interest income recognized in period 37 147
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]    
Recorded investment, with no allowance 5,090 746
Unpaid principal balance, with no allowance 5,090 746
Average recorded investment, with no allowance 5,114 727
Interest income recognized in period, with no allowance 63 44
Recorded investment, with an allowance 1,862 1,862
Unpaid principal balance, with an allowance 1,862 1,862
Related allowance 281 281
Average recorded investment, with an allowance 1,862 1,862
Interest income recognized in period, with an allowance 20 80
Recorded investment 6,952 2,608
Unpaid principal balance 6,952 2,608
Average recorded investment 6,976 2,589
Interest income recognized in period 83 124
Consumer Portfolio Segment [Member]    
Recorded investment, with no allowance 38 38
Unpaid principal balance, with no allowance 38 39
Average recorded investment, with no allowance 39 42
Interest income recognized in period, with no allowance 1 3
Recorded investment, with an allowance 49 50
Unpaid principal balance, with an allowance 49 50
Related allowance 49 50
Average recorded investment, with an allowance 50 42
Interest income recognized in period, with an allowance 1 3
Recorded investment 87 88
Unpaid principal balance 87 89
Average recorded investment 89 84
Interest income recognized in period $ 2 $ 6