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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Standards Effective in 2019 and 2018 (Details) $ in Thousands | Jan. 01, 2020 | Jan. 01, 2019 USD ($) | Dec. 31, 2019 USD ($)
--- | --- | --- | ---
Leases (Topic 842) |  |  |
Operating lease right-of-use assets |  |  | $ 43,450
Operating lease liabilities |  |  | $ 45,977
Lease, Practical Expedients, Package [true false] |  | true |
ASU 2016-02 | Measurement Period Adjustments |  |  |
Leases (Topic 842) |  |  |
Operating lease right-of-use assets |  | $ 39,000 |
Operating lease liabilities |  | $ 39,000 |
Forecast | ASU 2016-13 |  |  |
Financial Instruments - Credit Losses (Topic 326) |  |  |
Estimated maximum percentage increase in the current allowance for loan losses | 10 |  |

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- Definition Indicates (true false) whether practical expedients are elected for not reassessing whether any expired or existing contract is or contains lease, lease classification for expired or existing lease, and initial direct cost for any existing lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 10 -Section 65 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=119364159&loc=SL77916155-209984 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 10 -Section 65 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=119364159&loc=SL77916155-209984 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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