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Loans and Allowance for Loan Losses Loans and Allowance for Loan Losses, Part III (PCI Loans) (Details) - USD ($) | Jun. 30, 2019 | Dec. 31, 2018 | Jun. 30, 2018
--- | --- | --- | ---
Carrying Amount [Abstract] |  |  |
Allowance for loan losses |  |  | $ 0
Carrying amount, net of allowance | $ 2,518,467,000 | $ 2,616,822,000 |
Financial Asset Acquired with Credit Deterioration [Member] |  |  |
Carrying Amount [Abstract] |  |  |
Carrying amount | 8,990,000 | 15,623,000 | 16,026,000
Allowance for loan losses | (790,000) | (1,235,000) | 0
Carrying amount, net of allowance | 8,200,000 | 14,388,000 |
Financing Receivable, Allowance for Credit Losses Reversed | 697,000 | 65,000 |
Agricultural loans | Financial Asset Acquired with Credit Deterioration [Member] |  |  |
Carrying Amount [Abstract] |  |  |
Carrying amount | 0 | 4,000 |
Construction and land development | Financial Asset Acquired with Credit Deterioration [Member] |  |  |
Carrying Amount [Abstract] |  |  |
Carrying amount | 270,000 | 2,558,000 |
Agricultural real estate | Financial Asset Acquired with Credit Deterioration [Member] |  |  |
Carrying Amount [Abstract] |  |  |
Carrying amount | 0 | 0 |
1-4 Family residential properties | Financial Asset Acquired with Credit Deterioration [Member] |  |  |
Carrying Amount [Abstract] |  |  |
Carrying amount | 1,804,000 | 2,206,000 |
Multifamily residential properties | Financial Asset Acquired with Credit Deterioration [Member] |  |  |
Carrying Amount [Abstract] |  |  |
Carrying amount | 2,294,000 | 3,891,000 |
Commercial real estate | Financial Asset Acquired with Credit Deterioration [Member] |  |  |
Carrying Amount [Abstract] |  |  |
Carrying amount | 4,622,000 | 6,946,000 |
Real Estate Loan [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |
Carrying Amount [Abstract] |  |  |
Carrying amount | 8,990,000 | 15,601,000 |
Commercial and industrial loans | Financial Asset Acquired with Credit Deterioration [Member] |  |  |
Carrying Amount [Abstract] |  |  |
Carrying amount | 0 | 15,000 |
Consumer loans |  |  |
Carrying Amount [Abstract] |  |  |
Carrying amount | 92,492,000 | 100,041,000 |
Consumer loans | Financial Asset Acquired with Credit Deterioration [Member] |  |  |
Carrying Amount [Abstract] |  |  |
Carrying amount | 0 | 3,000 | 6,000
Allowance for loan losses | $ 0 | $ 0 | $ 0

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- Definition Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 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) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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