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Business Combinations (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Apr. 01, 2019 | Jul. 01, 2018
Business Acquisition [Line Items] |  |  |  |  |  |
Business Combination, Acquired Receivable, Fair Value |  |  |  |  | $ 578,577,000 |
Business Acquisition, Share Price |  |  |  |  | $ 3.80 |
Business Combination, Consideration Transferred [Abstract] |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  |  | $ 28,630,000 |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable |  |  |  | 98,275,000 |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Fair Value Method |  |  |  | 126,905,000 |  |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract] |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents |  |  |  |  | $ 23,799,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities |  |  |  |  | 97,606,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables |  |  |  |  | 578,577,000 | $ 272,800,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment [Abstract] |  |  |  |  | 8,337,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  |  |  | 8,207,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets |  |  |  |  | 32,123,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets |  |  |  |  | 748,649,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities |  |  |  |  | 632,649,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities |  |  |  |  | 35,951,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities |  |  |  |  | 668,600,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net |  |  |  |  | 80,049,000 |
Business Combination, Acquired Receivables, Gross Contractual Amount |  |  |  |  | $ 589,698,000 | $ 277,900,000
Goodwill, Acquired During Period | $ 0 |  | $ 0 | 45,260,000 |  |
Carolina Alliance [Member] |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract] |  |  |  |  |  |
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed | $ 158,000 | $ 654,000 | $ 602,000 | 6,900,000 |  |
Goodwill, Acquired During Period |  |  |  | $ 46,856,000 |  |
Common Stock [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business Acquisition, Share Price |  |  |  |  | $ 0.1378 |
Commercial, Financial, and Agricultural [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business Combination, Acquired Receivable, Fair Value |  |  |  |  | $ 80,580,000 |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract] |  |  |  |  |  |
Business Combination, Acquired Receivables, Gross Contractual Amount |  |  |  |  | 80,895,000 |
Commercial Real Estate [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business Combination, Acquired Receivable, Fair Value |  |  |  |  | 273,855,000 |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract] |  |  |  |  |  |
Business Combination, Acquired Receivables, Gross Contractual Amount |  |  |  |  | 281,425,000 |
Construction Real Estate Commercial [Domain] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business Combination, Acquired Receivable, Fair Value |  |  |  |  | 42,176,000 |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract] |  |  |  |  |  |
Business Combination, Acquired Receivables, Gross Contractual Amount |  |  |  |  | 43,106,000 |
Construction Real Estate - Mortgage [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business Combination, Acquired Receivable, Fair Value |  |  |  |  | 10,633,000 |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract] |  |  |  |  |  |
Business Combination, Acquired Receivables, Gross Contractual Amount |  |  |  |  | 11,130,000 |
Residential Real Estate Commercial [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business Combination, Acquired Receivable, Fair Value |  |  |  |  | 48,684,000 |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract] |  |  |  |  |  |
Business Combination, Acquired Receivables, Gross Contractual Amount |  |  |  |  | 48,546,000 |
Residential Real Estate - Mortgage [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business Combination, Acquired Receivable, Fair Value |  |  |  |  | 30,969,000 |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract] |  |  |  |  |  |
Business Combination, Acquired Receivables, Gross Contractual Amount |  |  |  |  | 30,519,000 |
Residential Real Estate Home Equity Line Of Credit [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business Combination, Acquired Receivable, Fair Value |  |  |  |  | 39,853,000 |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract] |  |  |  |  |  |
Business Combination, Acquired Receivables, Gross Contractual Amount |  |  |  |  | 40,825,000 |
Consumer Loan [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business Combination, Acquired Receivable, Fair Value |  |  |  |  | 4,647,000 |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract] |  |  |  |  |  |
Business Combination, Acquired Receivables, Gross Contractual Amount |  |  |  |  | 4,813,000 |
Finance Leases Portfolio Segment [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business Combination, Acquired Receivable, Fair Value |  |  |  |  | 28,781,000 |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract] |  |  |  |  |  |
Business Combination, Acquired Receivables, Gross Contractual Amount |  |  |  |  | 28,589,000 |
Purchased credit impaired [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business Combination, Acquired Receivable, Fair Value |  |  |  |  | 18,399,000 |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract] |  |  |  |  |  |
Business Combination, Acquired Receivables, Gross Contractual Amount |  |  |  |  | 19,850,000 |
Performing Financial Instruments [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business Combination, Acquired Receivable, Fair Value |  |  |  |  | 560,200,000 |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract] |  |  |  |  |  |
Business Combination, Acquired Receivables, Gross Contractual Amount |  |  |  |  | $ 572,600,000 |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + 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=121647850&loc=d3e4845-128472 + Details
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- Definition Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, 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=121647850&loc=d3e4845-128472 + Details
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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, 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=121647850&loc=d3e4845-128472 + Details
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