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Acquisition - Narrative (Details) $ in Thousands |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 06, 2019 USD ($) | May 01, 2018 USD ($) branch shares | Apr. 03, 2017 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  | $ (332,468) | $ (705) | $ (3,188)
Goodwill, Acquired During Period |  |  |  | 29,100 |  |
Merger and acquisition related |  |  |  | 3,536 | 1,637 | $ 10,213
Goodwill |  |  |  | 303,328 | $ 274,202 |
Santander Bank, N.A. [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  | $ 329,533 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | $ 112,913 |  |  |  |  |
Business Combination, Acquired Receivables, Gross Contractual Amount | 101,200 |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Deposits | 471,386 |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Deposits Gross | 471,000 |  |  |  |  |
Goodwill, Acquired During Period | 29,126 |  |  |  |  |
Merger and acquisition related |  |  |  | 3,700 |  |
Loans | 99,956 |  |  |  |  |
Business Combination, Acquired Receivables, Fair Value Adjustment | 1,200 |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Deposits Fair Value Adj | 400 |  |  |  |  |
Core deposit intangible | $ 5,615 |  |  |  |  |
Garfield Acquisition Corp [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  | $ 17,400 |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares |  | 2,745,098 |  |  |  |
Number of Full Service Branches | branch |  | 5 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets |  | $ 209,276 |  |  |  |
Business Combination, Acquired Receivables, Gross Contractual Amount |  | 183,700 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Deposits |  | 141,281 |  |  |  |
Goodwill, Acquired During Period |  | 19,022 |  |  |  |
Total consideration received |  | 58,961 |  |  |  |
Merger and acquisition related |  |  |  | $ 1,600 |  |
Loans |  | 184,506 |  |  |  |
Business Combination, Acquired Receivables, Fair Value Adjustment |  | 4,300 |  |  |  |
Business Combination, Acquired Receivables, Contractual Adjustments |  | 5,100 |  |  |  |
Core deposit intangible |  | $ 1,248 |  |  |  |

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- Definition For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the gross contractual amounts receivable, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460 + Details
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- Definition Amount of assets acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
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