FDIC Shared-Loss Receivable (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
FDIC Shared-Loss Receivable [Abstract]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	$ 53,900
FDIC shared-loss payable	$ 107,256	$ 105,618

Aggregate gross carrying amount of loans and leases receivable covered by loss sharing agreements.

No definition available.

Name:	us-gaap_LoansAndLeasesReceivableGrossCarryingAmountCovered
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant