Subsequent Events (Details) - Subsequent Event - Supplemental Employee Retirement Plans - Executive Officer	Jan. 19, 2016
Subsequent Event [Line Items]
Target total retirement benefit of final three year average salary (percent)	35.00%
Period of average salary for target total retirement benefit	3 years

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration