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The amount of partial charge-off on commercial lending relation ship recognized during the year.

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Represent the discount percentage used for evaluating collateral pledged for financing transactions.

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No definition available.

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Weighted average maturity of residential mortgages receivable, in 'PnYnMnDnTnHnMnS' format.

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No definition available.

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Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

+ References

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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The stated interest rate on the mortgage loan receivable or the weighted average interest rate on a group of loans.

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Amount of expense related to estimated loss from loan and lease transactions.

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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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Discount rate used to estimate the fair value of servicing assets and servicing liabilities.

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Description of qualitative information about the assumptions used to estimate fair value for servicing assets and servicing liabilities.

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FAIR VALUE DISCLOSURES (Additional Information) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016
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	$ 4,100
Weighted average interest rate, residential mortgages (in hundredths)	3.82%
Weighted average maturity of residential mortgages	19 years
Prepayment Speed used in unobservable assumptions	102		123
Discount rate used to estimate fair value (in hundredths)	9.40%		9.40%
Subtotal	$ 3,846,936		$ 3,819,525
Valuation allowance	45,627	$ 43,774	$ 47,121	$ 43,718
Recoveries	183	359
Provision For Loan and Lease Losses	3,300	200
Partial Charge-off on Commercial Lending Relationship	$ 4,600
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	$ 7,900
Valuation allowance	1,900
Recoveries		$ 800
Provision For Loan and Lease Losses	$ 4,200