Deposits - Schedule of Components of Weighted Average Interest Rate and Balance of Deposits (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Weighted Average Rate Domestic Deposit Liabilities [Abstract]
Noninterest-bearing deposits	0.00%	0.00%
Demand deposits	1.17%	1.01%
Savings deposits	0.39%	0.33%
Time deposits	2.02%	1.76%
Total deposits	0.85%	0.73%
Deposits [Abstract]
Noninterest-bearing deposits	$ 1,198,425	$ 1,055,919
Demand deposits	1,644,546	1,377,171
Savings deposits	776,920	782,766
Time deposits	718,100	670,077
Total deposits	$ 4,337,991	$ 3,885,933

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.

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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- Definition

Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs).

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- Definition

Amount of money in interest-bearing domestic accounts that entitle the depositor to withdraw funds at any time without prior notice, also known as demand deposits.

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- Definition

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

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Amount of time deposit liabilities, including certificates of deposit.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=116652737&loc=d3e64164-112818

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-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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Weighted average interest rate calculated at point in time for domestic deposit liability.

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- Definition

The weighted average interest rate for domestic demand deposit liabilities.

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The weighted average interest rate for domestic savings deposit liabilities.

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The weighted average interest rate for domestic time deposit liabilities.

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The weighted average interest rate for domestic noninterest-bearing deposit liabilities.

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