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LOAN LOSS ALLOWANCE - Narrative (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2016 USD ($) grade
Business Activities Loans |
Financing Receivable, Recorded Investment [Line Items] |
Number of grades in internal loan rating system (grade) | 3
Business Activities Loans | Residential | Mortgages | Pass |
Financing Receivable, Recorded Investment [Line Items] |
Period within which loans are current, based on which risk rating is assigned | 59 days
Business Activities Loans | Residential | Mortgages | Special mention | Minimum |
Financing Receivable, Recorded Investment [Line Items] |
Delinquency period of loans based on which risk rating is assigned | 60 days
Business Activities Loans | Residential | Mortgages | Special mention | Maximum |
Financing Receivable, Recorded Investment [Line Items] |
Delinquency period of loans based on which risk rating is assigned | 89 days
Business Activities Loans | Residential | Mortgages | Substandard |
Financing Receivable, Recorded Investment [Line Items] |
Delinquency period of loans based on which risk rating is assigned | 90 days
Other | Consumer |
Financing Receivable, Recorded Investment [Line Items] |
Number of grades in internal loan rating system (grade) | 2
Other | Consumer | Performing |
Financing Receivable, Recorded Investment [Line Items] |
Period within which loans are current, based on which risk rating is assigned | 119 days
Other | Consumer | Nonperforming |
Financing Receivable, Recorded Investment [Line Items] |
Delinquency period of loans based on which risk rating is assigned | 120 days
Acquired Loans |
Financing Receivable, Recorded Investment [Line Items] |
Certain loans acquired in transfer not accounted for as debt securities, allowance for loan losses | $ | $ 4.8

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- Definition Reserve for loans impairments recorded after acquisition as a result of current information and events which result in it being probable that estimated cash flows will be less than previously expected or because actual cash flows are less than cash flows previously expected. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 + Details
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