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Purchased Loans - Average Recorded Investment and Interest Income on Impaired Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2019
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Average Recorded Investment | $ 9,133 | $ 9,128
Interest Income Recognized | 50 | 98
Purchased with deteriorated credit quality |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Average Recorded Investment | 193,002 | 196,333
Interest Income Recognized | 2,728 | 5,699
Commercial, financial, agricultural | Purchased loans |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Average Recorded Investment | 1,010 | 941
Interest Income Recognized | 2 | 4
Commercial, financial, agricultural | Purchased loans | Purchased with deteriorated credit quality |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Average Recorded Investment | 23,976 | 25,667
Interest Income Recognized | 388 | 863
Real estate – construction: | Purchased loans |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Average Recorded Investment | 256 | 256
Interest Income Recognized | 0 | 3
Real estate – construction: | Purchased loans | Purchased with deteriorated credit quality |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Average Recorded Investment | 0 | 0
Interest Income Recognized | 0 | 0
Real estate – 1-4 family mortgage: | Purchased loans |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Average Recorded Investment | 5,415 | 5,450
Interest Income Recognized | 36 | 66
Real estate – 1-4 family mortgage: | Purchased loans | Purchased with deteriorated credit quality |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Average Recorded Investment | 43,011 | 43,360
Interest Income Recognized | 571 | 1,161
Real estate – commercial mortgage: | Purchased loans |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Average Recorded Investment | 2,082 | 2,109
Interest Income Recognized | 12 | 25
Real estate – commercial mortgage: | Purchased loans | Purchased with deteriorated credit quality |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Average Recorded Investment | 122,455 | 123,526
Interest Income Recognized | 1,674 | 3,474
Installment loans to individuals | Purchased loans |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Average Recorded Investment | 370 | 372
Interest Income Recognized | 0 | 0
Installment loans to individuals | Purchased loans | Purchased with deteriorated credit quality |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Average Recorded Investment | 3,560 | 3,780
Interest Income Recognized | $ 95 | $ 201

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