Mortgage Loans Held for Sale (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Mortgage Loans Held for Sale (Textual)
Mortgage loans held for sale, fair value	$ 10.9	$ 11.8

Fair value portion of mortgage loans held-for-sale.

No definition available.

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