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LOANS AND ALLOWANCE FOR LOAN LOSSES (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 | Dec. 31, 2018
Financing Receivable, Modifications [Line Items] |  |
Period for restructured loan to be considered default | 90 days |
Total loans held for investment, net | $ 11,952,310 | $ 9,716,207
Acquired Performing Loan Portfolio |  |
Financing Receivable, Modifications [Line Items] |  |
Total loans held for investment, net | 3,900,000 | 2,000,000
Remaining discount on acquired loans | 63,500 | 30,300
Purchased Impaired |  |
Financing Receivable, Modifications [Line Items] |  |
Total loans held for investment, net | 99,932 | 90,221
Purchased impaired loans (gross) | $ 125,000 | $ 113,500

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- Definition Amount before allowance and after 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. + 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 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 + Details
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