Fair Value Measurements (Details 6) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013
Aggregate Fair Value [Member]
Summarizes differences between fair value and principal balance for mortgage loans held for sale measure at fair value
Mortgage loans held for sale measured at fair value	$ 50,268
Past due loans of 90 days or more	0
Nonaccrual loans	0
Aggregate Unpaid Principal Balance [Member]
Summarizes differences between fair value and principal balance for mortgage loans held for sale measure at fair value
Mortgage loans held for sale measured at fair value	51,213
Past due loans of 90 days or more	0
Nonaccrual loans	0
Difference [Member]
Summarizes differences between fair value and principal balance for mortgage loans held for sale measure at fair value
Mortgage loans held for sale measured at fair value	(945)
Past due loans of 90 days or more	0
Nonaccrual loans	$ 0