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Investment Securities - Schedule of Gross Unrealized Losses on Investment Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 months, fair value | $ 41,201 | $ 120,325
Less than 12 months, unrealized losses | 507 | 513
More than 12 months, fair value | 137,480 | 124,903
More than 12 months, unrealized losses | 1,455 | 869
Total, fair value | 178,681 | 245,228
Total, unrealized losses | 1,962 | 1,382
U.S. Treasury and government sponsored entities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 months, fair value | 5,030 | 116,331
Less than 12 months, unrealized losses | 6 | 496
More than 12 months, fair value | 135,807 | 122,605
More than 12 months, unrealized losses | 1,433 | 840
Total, fair value | 140,837 | 238,936
Total, unrealized losses | 1,439 | 1,336
Corporate bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 months, fair value | 22,285 |
Less than 12 months, unrealized losses | 397 |
More than 12 months, fair value | 0 |
More than 12 months, unrealized losses | 0 |
Total, fair value | 22,285 |
Total, unrealized losses | 397 |
Collateralized loan obligations |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 months, fair value | 13,886 |
Less than 12 months, unrealized losses | 104 |
More than 12 months, fair value | 0 |
More than 12 months, unrealized losses | 0 |
Total, fair value | 13,886 |
Total, unrealized losses | 104 |
Municipal securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 months, fair value | 0 | 3,994
Less than 12 months, unrealized losses | 0 | 17
More than 12 months, fair value | 1,673 | 2,298
More than 12 months, unrealized losses | 22 | 29
Total, fair value | 1,673 | 6,292
Total, unrealized losses | $ 22 | $ 46

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563 + Details
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- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563 + Details
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563 + Details
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