Investment Securities Transfer from AFS to HTM (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended
	Jun. 27, 2014
Schedule of Available for Sale and Held-to-Maturity Securities [Line Items]
Remaining Expected Lives of Available-for-Sale Securities Transferred to Held-to-Maturity	4 years 3 months 0 days
U.S. agency residential mortgage-backed securities & collateralized mortgage obligations
Schedule of Available for Sale and Held-to-Maturity Securities [Line Items]
Available-for-Sale Securities Transferred to Held-to-Maturity, Amortized Costs	$ 396,640
Available-for-Sale Securities Transferred to Held-to-Maturity, Fair Values	388,808
Available-for-Sale Securities Transferred to Held-to-Maturity, Unrealized Net Gain (Loss)	$ 7,832