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Organization, Consolidation and Basis of Presentation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Organization, Consolidation and Basis of Presentation [Line Items]
Present value of lease liabilities	$ 22,618
Transfer from held-to-maturity securities to available-for-sale securities	$ 424,740	$ 0

X

- References

No definition available.

+ Details

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- Definition

Value of investments securities held for investment transferred to available for sale in noncash transactions.

+ References

No definition available.

+ Details

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X

- 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

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