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Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
Noninterest bearing demand, balance	$ 2,104,220	$ 1,982,912	$ 1,775,684
Interest bearing transaction, balance	593,107	420,417	289,122
Savings and money market, balance	2,949,559	2,621,146	2,902,560
Time, $100,000 or more, balance	801,957	515,682	464,842
Other time, balance	525,442	313,827	283,906
Total deposits	$ 6,974,285	$ 5,853,984	$ 5,716,114
Interest bearing transaction, average rate	0.81%	0.46%	0.16%
Savings and money market, average rate	1.68%	0.70%	0.54%
Time, $100,000 or more, average rate	2.25%	1.20%	0.95%
Other time, average rate	2.25%	1.17%	0.86%

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- Definition

Deposits savings and money market deposits.

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Weighted average interest rate interest bearing transaction deposits.

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Weighted average interest rate savings and money market deposits.

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- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.12)
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The aggregate of all domestic and foreign interest-bearing deposit liabilities.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.12)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher SEC
-Name Industry Guide
-Number 3
-Section V
-Paragraph D-E

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Amount of time deposit liabilities, including certificates of deposit, in denominations of less than $100,000.

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The weighted average interest rate of domestic and foreign time deposits (including certificates of deposits, individual retirement accounts and open accounts) in denominations of $100,000 or more, with maturities of three months or less.

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