Other Non-interest Income and Non-interest Expense - Summary of Other Expense (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other Income and Expenses [Abstract]
Consumer credit services		$ 4,240	$ 2,162	$ 7,532	$ 7,669
Other		10,401	9,218	19,234	16,742
Other non-interest expense	[1]	$ 14,641	$ 11,380	$ 26,766	$ 24,411

[1] Prior period amounts have been reclassified to conform to the current period presentation. See “Notes to Condensed Consolidated Financial Statements – Note 1. Summary of Significant Accounting Policies” for additional information.