Loans And Allowance For Credit Losses (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2015 Billing_Cycles D M Payments	Mar. 31, 2014	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2014
Loans And Allowance For Credit Losses [Line Items]
Certain Loans Account for as Cash Basis, Net Carrying Amounts					$ 5,300,000
Threshold for Internal risk grades assigned to commercial and commercial real estate loans	750,000
Unused Commitments to Extend Credit	7,500,000				6,100,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	(800,000)	(2,700,000)
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	2,424,000	327,000	74,500,000	142,400,000
Unearned income and fees, net of related costs	142,800,000				144,700,000
Owner occupied and commercial real estate loans, unamortized premiums	33,700,000				36,500,000
Land Development Loans	462,700,000				484,900,000
Loans at carrying value pledged as collateral for current and potential borrowings	22,600,000,000				22,500,000,000
Payments for Origination and Purchases of Loans Held-for-sale	309,700,000	295,500,000
Loans and Leases Receivable, Gain (Loss) on Sales, Net	4,600,000	3,500,000
Principle amount of loans held for sale sold	300,400,000	337,600,000
Servicing Asset at Amortized Cost	0				0
Number of days for consumer loans to be charged off	180
Number of days for closed-end loans to be charged off	120
Minimum number of days past due for nonaccrual status	90
Minimum number of monthly payments in arrears when reporting past due	2
Minimum number of billing cycles in arrears when reported as past due	2
Minimum number of days unpaid when reported as past due	30
Threshold for nonaccrual loans for evaluation of impairment	1,000,000
Minimum number of months for borrower to meet terms For TDR status	6
Recorded investment in TDR loans modified with interest rates below market	198,600,000				219,300,000
Total reversal amount to ALLL	1,400,000	2,900,000
Additional interest income due to increased cash flows from acquired loans	7,400,000	18,500,000
Provision for Loan and Lease Losses	(1,494,000)	(610,000)
Provision for Unfunded Lending Commitments	1,211,000	1,012,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	4,800,000
Other Real Estate, In Process of Forecloseing Assets	10,500,000
Commercial [Member]
Loans And Allowance For Credit Losses [Line Items]
Subsequent payment default period, number of days	90
Provision for Loan and Lease Losses	24,934,000	11,260,000
Provision for Unfunded Lending Commitments	3,844,000	1,525,000
Consumer Portfolio Segment [Member]
Loans And Allowance For Credit Losses [Line Items]
Subsequent payment default period, number of days	60
Provision for Loan and Lease Losses	459,000	(8,979,000)
Provision for Unfunded Lending Commitments	$ 53,000	$ (325,000)