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RELATED-PARTY TRANSACTIONS - Current Related Party Indemnification Costs (Details) - Special Committee Investigation - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Emeritus John Grosvenor | Former General Counsel
Related Party Transaction [Line Items]
Expenses from transactions with related parties	$ 879	$ 415	$ 501
Steven A. Sugarman | Former President And Chief Executive Officer
Related Party Transaction [Line Items]
Expenses from transactions with related parties	11,900	8,500	3,000
Francisco A. Turner and James J. McKinney | Former Interim Chief Financial Officer And Chief Strategy Officer And Former Chief Financial Officer
Related Party Transaction [Line Items]
Expenses from transactions with related parties	795	400	631
Cynthia Abercrombie | Former Bank Director
Related Party Transaction [Line Items]
Expenses from transactions with related parties	$ 180	292
Jonah F. Schnel | Director
Related Party Transaction [Line Items]
Expenses from transactions with related parties		854
Robert Sznewajs | Director
Related Party Transaction [Line Items]
Expenses from transactions with related parties		854
Jeffrey T. Seabold | Former Management Vice Chair
Related Party Transaction [Line Items]
Expenses from transactions with related parties		497	1,400
Halle J. Benett | Former Director
Related Party Transaction [Line Items]
Expenses from transactions with related parties		854
Jeffrey Karish | Director
Related Party Transaction [Line Items]
Expenses from transactions with related parties		$ 854
Chad Brownstein | Former Director
Related Party Transaction [Line Items]
Expenses from transactions with related parties			$ 509

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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