Introduction and Basis of Presentation (Details)	Mar. 31, 2015 state item
Introduction and Basis of Presentation [Abstract]
Minimum number of domestic branch offices	325
States with domestic branch offices	45

The number of states the entity operates in as of the balance sheet date.

No definition available.

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant