Additional Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018
Other Significant Noncash Transactions [Line Items]
Interest paid	$ 87,841	$ 47,675
Income taxes (refunded) paid	28,253	13,245
Right-of use lease assets obtained in exchange for lessee operating lease liabilities (adoption of ASU 2016-02)	32,757	0
Transfers of loans to foreclosed assets held for sale
Other Significant Noncash Transactions [Line Items]
Transfers of loans	1,506	6,725
Transfers of premises to foreclosed assets and other real estate owned
Other Significant Noncash Transactions [Line Items]
Transfers of loans	$ 444	$ 855

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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