Additional Cash Flow Information - Additional Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Significant Noncash Transactions [Line Items]
Interest paid	$ 122,801	$ 39,384	$ 22,069
Income taxes paid	25,718	35,770	39,824
Transfers of loans to foreclosed assets held for sale
Other Significant Noncash Transactions [Line Items]
Real estate transferred	16,858	6,983	4,604
Transfers of premises to foreclosed assets and other real estate owned
Other Significant Noncash Transactions [Line Items]
Real estate transferred	3,690	5,422	0
Transfers of premises held for sale to foreclosed assets and other real estate owned
Other Significant Noncash Transactions [Line Items]
Real estate transferred	$ 0	$ 3,188	$ 652

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

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Value transferred from mortgage loans to real estate owned (REO) in noncash transactions.

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