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RECENT ACCOUNTING PRONOUNCEMENTS (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2018	Mar. 31, 2018	Mar. 31, 2017
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Reclassified mortgage-backed seurities	$ 12,619	$ 12,619
Reclassified adjustment from AOCI to retained earnings	$ 188,000	$ 188,000

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Amount reclassified to unappropriated retained earnings from accumulated increase (decrease) in the fair value of the financial assets (liabilities) of the collateralized financing entity.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 65
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Value of investments transferred from the entity's investments in noncash transactions.

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