Other Real Estate and Property Acquired in Settlement of Loans - Narrative (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Real Estate [Abstract]
Other real estate, covered	$ 0	$ 573,000
Mortgage loans in process of foreclosure	$ 3,000,000	$ 2,000,000

Carrying amount of other real estate covered by loss sharing agreements not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations that may also be included in real estate owned. Excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure by banks.

No definition available.

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