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LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Purchase Credit Impaired Loans Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Jun. 30, 2017 | Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding balance | $ 21,468 | $ 10,636
Consumer | Single family residential mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Aggregate unpaid principal | 168,300 |
Aggregate carrying value | 147,900 |
Fair value adjustments | 1,800 |
Outstanding balance | 146,100 |
Purchased Credit Impaired | Consumer | Single family residential mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Aggregate unpaid principal | 147,500 |
Aggregate carrying value | 128,400 |
Fair value adjustments | 274 |
Outstanding balance | $ 128,100 |

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- Definition Transfer Of Portfolio Loans And Leases To Held-For-Sale, Aggregate Carrying Value + References No definition available. + Details
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- Definition Transfer Of Portfolio Loans And Leases To Held-For-Sale, Aggregate Unpaid Principal + References No definition available. + Details
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- Definition Amount of other addition (reduction) in allowance reserve for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount, after allowance for bad debt, of loan receivables held-for-sale that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 + Details
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