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Allowance for Probable Loan Losses (By Loan Class) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Allowance for probable loan losses |  |  |  |  |  |
Balance at the beginning of the period | $ 58,203 |  | $ 61,384 | $ 62,853 | $ 61,384 | $ 67,687
Losses charged to allowance | (4,293) |  |  | (7,088) | (19,172) | (12,424)
Recoveries credited to allowance | 672 |  |  | 609 | 2,285 | 2,179
Net losses (recoveries) charged to allowance | (3,621) |  |  | (6,479) | (16,887) | (10,245)
Provision charged to operations | 5,278 |  |  | 4,280 | 15,363 | 3,212
Balance at the end of the period | 59,860 | $ 58,203 |  | 60,654 | 59,860 | 60,654
Watch - List Impaired |  |  |  |  |  |
Allowance for probable loan losses |  |  |  |  |  |
Losses charged to allowance |  | 9,500 | 9,500 |  |  |
Commercial |  |  |  |  |  |
Allowance for probable loan losses |  |  |  |  |  |
Balance at the beginning of the period | 11,780 |  | 12,596 | 16,596 | 12,596 | 27,905
Losses charged to allowance | (3,231) |  |  | (6,798) | (11,011) | (11,798)
Recoveries credited to allowance | 585 |  |  | 489 | 1,631 | 1,520
Net losses (recoveries) charged to allowance | (2,646) |  |  | (6,309) | (9,380) | (10,278)
Provision charged to operations | 1,837 |  |  | 3,039 | 7,755 | (4,301)
Balance at the end of the period | 10,971 | 11,780 |  | 13,326 | 10,971 | 13,326
Commercial Real Estate:Other Construction and Land Development |  |  |  |  |  |
Allowance for probable loan losses |  |  |  |  |  |
Balance at the beginning of the period | 15,273 |  | 15,123 | 14,703 | 15,123 | 11,675
Losses charged to allowance |  |  |  |  |  | (1)
Recoveries credited to allowance | 4 |  |  | 4 | 80 | 8
Net losses (recoveries) charged to allowance | 4 |  |  | 4 | 80 | 7
Provision charged to operations | 1,573 |  |  | 397 | 1,647 | 3,422
Balance at the end of the period | 16,850 | 15,273 |  | 15,104 | 16,850 | 15,104
Commercial Real Estate: Farmland and Commercial |  |  |  |  |  |
Allowance for probable loan losses |  |  |  |  |  |
Balance at the beginning of the period | 17,029 |  | 19,353 | 18,296 | 19,353 | 16,663
Losses charged to allowance | (468) |  |  |  | (7,347) | (70)
Recoveries credited to allowance | 10 |  |  | 19 | 308 | 229
Net losses (recoveries) charged to allowance | (458) |  |  | 19 | (7,039) | 159
Provision charged to operations | 230 |  |  | 1,050 | 4,487 | 2,543
Balance at the end of the period | 16,801 | 17,029 |  | 19,365 | 16,801 | 19,365
Commercial Real Estate: Multifamily |  |  |  |  |  |
Allowance for probable loan losses |  |  |  |  |  |
Balance at the beginning of the period | 1,849 |  | 1,808 | 1,574 | 1,808 | 1,109
Provision charged to operations | 350 |  |  | (138) | 391 | 327
Balance at the end of the period | 2,199 | 1,849 |  | 1,436 | 2,199 | 1,436
Residential First Lien |  |  |  |  |  |
Allowance for probable loan losses |  |  |  |  |  |
Balance at the beginning of the period | 3,627 |  | 3,467 | 3,591 | 3,467 | 2,950
Losses charged to allowance | (164) |  |  | (74) | (166) | (118)
Recoveries credited to allowance | 3 |  |  | 23 | 14 | 25
Net losses (recoveries) charged to allowance | (161) |  |  | (51) | (152) | (93)
Provision charged to operations | 263 |  |  | (354) | 414 | 329
Balance at the end of the period | 3,729 | 3,627 |  | 3,186 | 3,729 | 3,186
Residential Junior Lien |  |  |  |  |  |
Allowance for probable loan losses |  |  |  |  |  |
Balance at the beginning of the period | 7,312 |  | 7,719 | 6,793 | 7,719 | 6,103
Losses charged to allowance | (214) |  |  | (133) | (314) | (172)
Recoveries credited to allowance | 65 |  |  | 53 | 222 | 348
Net losses (recoveries) charged to allowance | (149) |  |  | (80) | (92) | 176
Provision charged to operations | 852 |  |  | 194 | 388 | 628
Balance at the end of the period | 8,015 | 7,312 |  | 6,907 | 8,015 | 6,907
Consumer |  |  |  |  |  |
Allowance for probable loan losses |  |  |  |  |  |
Balance at the beginning of the period | 488 |  | 447 | 450 | 447 | 440
Losses charged to allowance | (216) |  |  | (80) | (334) | (262)
Recoveries credited to allowance | 5 |  |  | 12 | 30 | 39
Net losses (recoveries) charged to allowance | (211) |  |  | (68) | (304) | (223)
Provision charged to operations | 199 |  |  | 57 | 333 | 222
Balance at the end of the period | 476 | 488 |  | 439 | 476 | 439
Foreign |  |  |  |  |  |
Allowance for probable loan losses |  |  |  |  |  |
Balance at the beginning of the period | 845 |  | $ 871 | 850 | 871 | 842
Losses charged to allowance |  |  |  | (3) |  | (3)
Recoveries credited to allowance |  |  |  | 9 |  | 10
Net losses (recoveries) charged to allowance |  |  |  | 6 |  | 7
Provision charged to operations | (26) |  |  | 35 | (52) | 42
Balance at the end of the period | $ 819 | $ 845 |  | $ 891 | $ 819 | $ 891

X
- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=118939070&loc=d3e15032-111544 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 + Details
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