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Deposits - Composition of Deposits and Interest Expenses (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Time Deposits [Line Items] |  |  |
Balance | $ 7,420,538 | $ 7,036,576 | $ 5,673,922
Interest Expense | 35,986 | 63,026 | 40,856
Noninterest-bearing demand |  |  |
Time Deposits [Line Items] |  |  |
Balance | 2,261,994 | 1,698,082 | 1,421,156
Interest Expense | 0 | 0 | 0
Interest-bearing demand |  |  |
Time Deposits [Line Items] |  |  |
Balance | 864,510 | 962,331 | 573,693
Interest Expense | 2,681 | 3,915 | 93
Money market |  |  |
Time Deposits [Line Items] |  |  |
Balance | 1,937,063 | 1,949,811 | 1,482,065
Interest Expense | 11,645 | 30,236 | 20,018
Savings |  |  |
Time Deposits [Line Items] |  |  |
Balance | 969,508 | 830,919 | 784,970
Interest Expense | 972 | 1,928 | 1,773
Certificates of deposit |  |  |
Time Deposits [Line Items] |  |  |
Balance | 1,387,463 | 1,595,433 | 1,412,038
Interest Expense | $ 20,688 | $ 26,947 | $ 18,972

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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) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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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=120399700&loc=SL114874048-224260 + Details
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- References No definition available. + Details
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- Details
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- Details
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- Details
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