Deposits - Interest Expense On Deposits (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Banking and Thrift [Abstract]
Negotiable orders of withdrawal, savings, and money market	$ 4,794	$ 2,143
Certificates of deposit	5,453	3,068
Total interest expense on deposit accounts	$ 10,247	$ 5,211

No definition available.

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- Definition

Aggregate amount of interest expense on all deposits.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.6)
-URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260

+ Details

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- Definition

Amount of interest expense on domestic certificates of deposit liabilities.

+ References

+ Details

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- Definition

Amount of interest expense on domestic demand deposit liabilities.

+ References

+ Details

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