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LOANS - Additional Information (Detail) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 USD ($) loans | Dec. 31, 2017 USD ($) loans | Dec. 31, 2016 USD ($) loans | Dec. 31, 2015 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Number of Restructured Loans | loans | 196 | 214 | 247 |
Total restructured loans | $ 38,500,000 | $ 23,900,000 | $ 35,400,000 |
Restructured Loans, Accrual Status | 16,109,000 | 17,545,000 | 30,240,000 |
Restructured Loans, Nonaccrual Status | 22,400,000 | 6,400,000 | 5,100,000 |
Loans and Leases Receivable, Impaired, Commitment to Lend | 0 |  | 900,000 |
Restructured Loans, Allowance for Loan and Lease Losses Included in Reserves | 1,500,000 | 1,300,000 | 1,900,000 |
Restructured Loans, Portion Determined to be Uncollectible | 900,000 | 300,000 | 500,000 |
Accruing TDRs performing in accordance with restructured terms for more than one year | 7,900,000 | 17,200,000 | 22,600,000 |
Purchased impaired loans, carrying balance | 96,320,000 | 104,960,000 |  |
Gain (loss) on sale of other real estate owned | (373,000) | (642,000) | 1,212,000 |
Real Estate Acquired Through Foreclosure | 1,401,000 | $ 2,781,000 | $ 6,284,000 | $ 13,254,000
Residential real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Restructured Loans, Loan Relationships, Review Threshold Amount Minimum | $ 250,000 |  |  |

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