XML 51 R40.htm IDEA: XBRL DOCUMENT v3.8.0.1
Loans and Allowance for Loan Losses - Schedule of Impaired Loans and Related Allowance (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Financing Receivable, Impaired [Line Items]          
Unpaid Contractual Principal Balance $ 29,749 $ 47,473 $ 29,749 $ 47,473 $ 38,379
Recorded Investment With No Allowance 4,621 7,017 4,621 7,017 7,657
Recorded Investment With Allowance 14,129 26,695 14,129 26,695 19,714
Total Recorded Investment 18,750 33,712 18,750 33,712 27,371
Related Allowance 4,177 7,042 4,177 7,042 5,012
Average Recorded Investment 20,993 34,924 22,999 26,514 22,055
Commercial [Member]          
Financing Receivable, Impaired [Line Items]          
Unpaid Contractual Principal Balance 10,989 21,696 10,989 21,696 13,389
Recorded Investment With No Allowance 617 1,067 617 1,067 1,148
Recorded Investment With Allowance 3,516 11,647 3,516 11,647 6,136
Total Recorded Investment 4,133 12,714 4,133 12,714 7,284
Related Allowance 1,671 3,983 1,671 3,983 2,128
Average Recorded Investment 5,866 14,238 7,313 8,421 4,921
Agriculture [Member]          
Financing Receivable, Impaired [Line Items]          
Unpaid Contractual Principal Balance 66 168 66 168 103
Recorded Investment With Allowance 60 167 60 167 99
Total Recorded Investment 60 167 60 167 99
Related Allowance 17 41 17 41 25
Average Recorded Investment 60 84 66 83 50
Real Estate [Member]          
Financing Receivable, Impaired [Line Items]          
Unpaid Contractual Principal Balance 17,306 24,130 17,306 24,130 23,466
Recorded Investment With No Allowance 3,742 5,626 3,742 5,626 6,229
Recorded Investment With Allowance 9,644 13,956 9,644 13,956 12,525
Total Recorded Investment 13,386 19,582 13,386 19,582 18,754
Related Allowance 1,984 2,566 1,984 2,566 2,428
Average Recorded Investment 13,829 19,436 14,279 17,021 16,170
Consumer [Member]          
Financing Receivable, Impaired [Line Items]          
Unpaid Contractual Principal Balance 1,388 1,479 1,388 1,479 1,421
Recorded Investment With No Allowance 262 324 262 324 280
Recorded Investment With Allowance 909 925 909 925 954
Total Recorded Investment 1,171 1,249 1,171 1,249 1,234
Related Allowance 505 452 505 452 431
Average Recorded Investment $ 1,238 $ 1,166 $ 1,341 $ 989 $ 914