Financial Instruments with Off-Balance Sheet Risk (Details) $ in Thousands	Mar. 31, 2016 USD ($)
Entity Information [Line Items]
Credit Extension Commitments	$ 1,582,107
Credit Extension Commitments, Beyond One Year	400,922
Standby Letters of Credit
Entity Information [Line Items]
Credit Extension Commitments	52,402
Unused Credit Card Lines
Entity Information [Line Items]
Credit Extension Commitments	$ 562,367