Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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Amount of direct write-downs of financing receivables charged against the allowance.

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-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense

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Quarterly Financial Data (unaudited) - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			12 Months Ended
	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Recoveries				$ 3,150	$ 1,301	$ 2,038
Effect on diluted earnings per share			$ 0.04
Charge-offs				15,651	7,137	6,988
Federal (net of state benefit) - enactment of tax reform			$ 1,100		1,100
Commercial, Financial and Agricultural [Member]
Recoveries				2,140	801	1,454
Charge-offs				$ 14,655	$ 1,030	$ 4,827
Loan Participations [Member] \| Commercial, Financial and Agricultural [Member]
Recoveries	$ 1,800
Recovery, after-tax	$ 1,500
Effect on diluted earnings per share	$ 0.05	$ 0.34
Charge-offs		$ 12,700
Charge-off, after-tax		$ 10,100