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FAIR VALUE (Additional Information) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Mortgage servicing rights | $ 4,400,000 |  |  |
Weighted average interest rate, residential mortgages (in hundredths) | 3.91% |  |  |
Weighted average maturity of residential mortgages | 20 years |  |  |
Prepayment Speed used in unobservable assumptions | 81 | 123 |  |
Discount rate used to estimate fair value (in hundredths) | 9.40% | 9.40% |  |
Subtotal | $ 3,916,326,000 | $ 3,819,525,000 |  |
Valuation allowance | 48,453,000 | 47,121,000 | $ 43,718,000 | $ 43,610,000
Provision for Loan and Lease Losses | 6,400,000 | 3,000,000 | $ 1,150,000 |
Ten Percent Adverse Changes In Psa [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Mortgage servicing rights | 94,000 |  |  |
Twenty Percent Adverse Changes In Psa [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Mortgage servicing rights | 183,000 |  |  |
Ten Percent Adverse Changes In Discount Rate [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Mortgage servicing rights | 186,000 |  |  |
Twenty Percent Adverse Changes In Discount Rate [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Mortgage servicing rights | $ 358,000 |  |  |
Commercial Real Estates [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Percentage of discount from appraised value (in hundredths) | 0.00% |  |  |
Commercial Real Estates [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Percentage of discount from appraised value (in hundredths) | 50.00% |  |  |
Inventory Finished Goods [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Percentage of discount from appraised value (in hundredths) | 35.00% |  |  |
Inventory Finished Goods [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Percentage of discount from appraised value (in hundredths) | 65.00% |  |  |
Finished Goods [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Percentage of discount from appraised value (in hundredths) | 30.00% |  |  |
Finished Goods [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Percentage of discount from appraised value (in hundredths) | 60.00% |  |  |
Inventory Work In Process [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Percentage of discount from appraised value (in hundredths) | 50.00% |  |  |
Inventory Work In Process [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Percentage of discount from appraised value (in hundredths) | 100.00% |  |  |
Equipment [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Percentage of discount from appraised value (in hundredths) | 30.00% |  |  |
Equipment [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Percentage of discount from appraised value (in hundredths) | 70.00% |  |  |
Marketable Securities [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Percentage of discount from appraised value (in hundredths) | 10.00% |  |  |
Marketable Securities [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Percentage of discount from appraised value (in hundredths) | 30.00% |  |  |
Impaired Loans [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Subtotal | $ 21,000,000 | 6,800,000 |  |
Valuation allowance | 9,500,000 | 2,400,000 |  |
Provision for Loan and Lease Losses | 7,100,000 | $ 700,000 |  |
Other Real Estate Owned [Member] |  |  |  |
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |  |  |  |
Impaired Loans Fair Value Disclosure | $ 316,000 |  |  |

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