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Note Loans (Changes in the carrying amount and the accretable yield for the acquired loans) (Parenthetical) (Detail) - ASC Subtopic 310-30 - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018 | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable |  |  |  |  |
Carrying amount | $ 1,831,257 | [1] | $ 1,883,556 | $ 2,085,191 | $ 2,108,993
Accretable yield | 1,068,167 | [2] | $ 1,092,504 | 1,204,726 | $ 1,214,488
Non-credit Impaired Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable |  |  |  |  |
Carrying amount | 1,300,000 |  |  | 1,500,000 |
Accretable yield | $ 700,000 |  |  | $ 900,000 |
[1] | At March 31, 2019, includes $1.3 billion of loans considered non-credit impaired at the acquisition date (March 31, 2018 - $1.5 billion).
[2] | At March 31, 2019, includes $0.7 billion for loans considered non-credit impaired at the acquisition date (March 31, 2018 - $0.9 billion).

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