Allowance for Loan and Lease Losses (Note Restructurings During Period) (Details) (USD $) In Thousands, unless otherwise specified			3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2012	Mar. 31, 2012 Noncovered Loans [Member]	Mar. 31, 2012 Noncovered Loans [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] Construction and Land Development - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] Construction and Land Development - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] Commercial Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] Commercial Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] Other Commercial Real Estate [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] Other Commercial Real Estate [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] Commercial And Industrial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] Commercial And Industrial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] Finance Leases Financing Receivable [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] Finance Leases Financing Receivable [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] Residential Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] Residential Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] Construction And Land Development - Non - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] Construction And Land Development - Non - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] Consumer [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Interest Only Loan [Member] Consumer [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] Construction and Land Development - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] Construction and Land Development - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] Commercial Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] Commercial Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] Other Commercial Real Estate [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] Other Commercial Real Estate [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] Commercial And Industrial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] Commercial And Industrial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] Finance Leases Financing Receivable [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] Finance Leases Financing Receivable [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] Residential Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] Residential Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] Construction And Land Development - Non - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] Construction And Land Development - Non - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] Consumer [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Loan Term Extension [Member] Consumer [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Below Market Interest Rate [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Below Market Interest Rate [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Below Market Interest Rate [Member] Construction and Land Development - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Below Market Interest Rate [Member] Construction and Land Development - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Below Market Interest Rate [Member] Commercial Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Below Market Interest Rate [Member] Commercial Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Below Market Interest Rate [Member] Other Commercial Real Estate [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Below Market Interest Rate [Member] Other Commercial Real Estate [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Below Market Interest Rate [Member] Commercial And Industrial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Below Market Interest Rate [Member] Commercial And Industrial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Below Market Interest Rate [Member] Residential Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Below Market Interest Rate [Member] Residential Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Below Market Interest Rate [Member] Construction And Land Development - Non - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Below Market Interest Rate [Member] Construction And Land Development - Non - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Other Concession [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Other Concession [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Other Concession [Member] Commercial Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Other Concession [Member] Commercial Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Other Concession [Member] Commercial And Industrial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Noncovered Loans [Member] Other Concession [Member] Commercial And Industrial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member]	Mar. 31, 2012 Covered Loans [Member] Construction And Land Development - Non - Commercial [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Construction And Land Development - Non - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Construction And Land Development - Non - Commercial [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Construction And Land Development - Non - Commercial [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Interest Only Loan [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Interest Only Loan [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Interest Only Loan [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Interest Only Loan [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Interest Only Loan [Member] Construction and Land Development - Commercial [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Interest Only Loan [Member] Construction and Land Development - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Interest Only Loan [Member] Construction and Land Development - Commercial [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Interest Only Loan [Member] Construction and Land Development - Commercial [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Interest Only Loan [Member] Commercial Mortgage [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Interest Only Loan [Member] Commercial Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Interest Only Loan [Member] Commercial Mortgage [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Interest Only Loan [Member] Commercial Mortgage [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Interest Only Loan [Member] Residential Mortgage [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Interest Only Loan [Member] Residential Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Interest Only Loan [Member] Residential Mortgage [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Interest Only Loan [Member] Residential Mortgage [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Construction and Land Development - Commercial [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Construction and Land Development - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Construction and Land Development - Commercial [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Construction and Land Development - Commercial [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Commercial Mortgage [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Commercial Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Commercial Mortgage [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Commercial Mortgage [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Other Commercial Real Estate [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Other Commercial Real Estate [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Other Commercial Real Estate [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Other Commercial Real Estate [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Commercial And Industrial [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Commercial And Industrial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Commercial And Industrial [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Commercial And Industrial [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Residential Mortgage [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Residential Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Residential Mortgage [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Loan Term Extension [Member] Residential Mortgage [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Construction and Land Development - Commercial [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Construction and Land Development - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Construction and Land Development - Commercial [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Construction and Land Development - Commercial [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Commercial Mortgage [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Commercial Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Commercial Mortgage [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Commercial Mortgage [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Other Commercial Real Estate [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Other Commercial Real Estate [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Other Commercial Real Estate [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Other Commercial Real Estate [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Commercial And Industrial [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Commercial And Industrial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Commercial And Industrial [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Commercial And Industrial [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Residential Mortgage [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Residential Mortgage [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Residential Mortgage [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Residential Mortgage [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Construction And Land Development - Non - Commercial [Member] All Restructuring [Member] loans	Dec. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Construction And Land Development - Non - Commercial [Member] All Restructuring [Member] loans	Mar. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Construction And Land Development - Non - Commercial [Member] Restructuring With Payment Default [Member] loans	Dec. 31, 2012 Covered Loans [Member] Below Market Interest Rate [Member] Construction And Land Development - Non - Commercial [Member] Restructuring With Payment Default [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] Construction and Land Development - Commercial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] Construction and Land Development - Commercial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] Commercial Mortgage [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] Commercial Mortgage [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] Other Commercial Real Estate [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] Other Commercial Real Estate [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] Commercial And Industrial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] Commercial And Industrial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] Finance Leases Financing Receivable [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] Finance Leases Financing Receivable [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] Residential Mortgage [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] Residential Mortgage [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] Construction And Land Development - Non - Commercial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] Construction And Land Development - Non - Commercial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] Consumer [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Interest Only Loan [Member] Consumer [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] Construction and Land Development - Commercial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] Construction and Land Development - Commercial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] Commercial Mortgage [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] Commercial Mortgage [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] Other Commercial Real Estate [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] Other Commercial Real Estate [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] Commercial And Industrial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] Commercial And Industrial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] Finance Leases Financing Receivable [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] Finance Leases Financing Receivable [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] Residential Mortgage [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] Residential Mortgage [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] Construction And Land Development - Non - Commercial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] Construction And Land Development - Non - Commercial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] Consumer [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Loan Term Extension [Member] Consumer [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Below Market Interest Rate [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Below Market Interest Rate [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Below Market Interest Rate [Member] Construction and Land Development - Commercial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Below Market Interest Rate [Member] Construction and Land Development - Commercial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Below Market Interest Rate [Member] Commercial Mortgage [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Below Market Interest Rate [Member] Commercial Mortgage [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Below Market Interest Rate [Member] Other Commercial Real Estate [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Below Market Interest Rate [Member] Other Commercial Real Estate [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Below Market Interest Rate [Member] Commercial And Industrial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Below Market Interest Rate [Member] Commercial And Industrial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Below Market Interest Rate [Member] Residential Mortgage [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Below Market Interest Rate [Member] Residential Mortgage [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Below Market Interest Rate [Member] Construction And Land Development - Non - Commercial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Below Market Interest Rate [Member] Construction And Land Development - Non - Commercial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Other Concession [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Other Concession [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Other Concession [Member] Commercial Mortgage [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Other Concession [Member] Commercial Mortgage [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Other Concession [Member] Commercial And Industrial [Member] loans	Mar. 31, 2012 Restructuring With Payment Default [Member] Noncovered Loans [Member] Other Concession [Member] Commercial And Industrial [Member] loans
Financing Receivable, Modifications [Line Items]
Number of Loans			46	176	12	41	0	4	10	26	0	1	1	6	0	0	0	2	0	1	1	1	25	83	1	3	13	41	0	4	3	18	2	3	5	11	1	2	0	1	7	50	1	7	2	26	0	0	1	5	3	11	0	1	2	2	1	1	1	1		32	120	1	24	1	9	0	2	1	5	0	1	0	2	0	0	0	2	0	1	4	29	0	7	2	9	0	3	1	7	0	0	0	4	0	0	0	3	0	1	1	6	0	3	27	82	1	15	10	24	0	4	7	26	0	3	0	1	0	1	3	9	0	1	7	21	1	6	0	1	0	0	4	35	1	9	0	3	1	4	0	1	0	1	0	0	0	0	0	0	0	0	2	15	0	0	2	7		1	0	3	0	0	0	2	0	1	0	1	0	10	0	2	0	6	0	0	0	0	0	1	0	1	1	1	0	0	1	1
Recorded investment at period end			$ 24,098	$ 84,104	$ 6,056	$ 19,321	$ 0	$ 1,424	$ 4,625	$ 13,958	$ 0	$ 365	$ 531	$ 1,907	$ 0	$ 0	$ 0	$ 291	$ 0	$ 476	$ 900	$ 900	$ 14,022	$ 33,179	$ 7,169	$ 8,739	$ 3,692	$ 15,520	$ 0	$ 1,156	$ 282	$ 3,106	$ 73	$ 79	$ 805	$ 2,168	$ 2,001	$ 2,396	$ 0	$ 15	$ 3,829	$ 31,413	$ 231	$ 8,794	$ 1,956	$ 18,172	$ 0	$ 0	$ 764	$ 1,276	$ 878	$ 2,815	$ 0	$ 356	$ 191	$ 191	$ 168	$ 168	$ 23	$ 23		$ 13,628	$ 114,552	$ 103	$ 21,642	$ 133	$ 23,230	$ 0	$ 8,643	$ 133	$ 9,419	$ 0	$ 4,272	$ 0	$ 8,378	$ 0	$ 0	$ 0	$ 5,433	$ 0	$ 4,371	$ 690	$ 15,250	$ 0	$ 2,270	$ 161	$ 3,186	$ 0	$ 1,389	$ 480	$ 4,491	$ 0	$ 0	$ 0	$ 6,271	$ 0	$ 0	$ 0	$ 271	$ 0	$ 145	$ 49	$ 1,031	$ 0	$ 736	$ 12,805	$ 76,072	$ 103	$ 10,729	$ 1,794	$ 9,913	$ 0	$ 4,689	$ 9,194	$ 57,504	$ 0	$ 3,699	$ 0	$ 71	$ 0	$ 71	$ 260	$ 1,609	$ 0	$ 746	$ 1,557	$ 5,405	$ 103	$ 1,524	$ 0	$ 1,570	$ 0	$ 0	$ 1,277	$ 12,571	$ 669	$ 5,117	$ 0	$ 1,231	$ 669	$ 3,493	$ 0	$ 365	$ 0	$ 28	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 585	$ 3,373	$ 0	$ 0	$ 585	$ 1,836		$ 127	$ 0	$ 722	$ 0	$ 0	$ 0	$ 278	$ 0	$ 395	$ 0	$ 15	$ 0	$ 4,058	$ 0	$ 763	$ 0	$ 2,887	$ 0	$ 0	$ 0	$ 0	$ 0	$ 52	$ 0	$ 356	$ 23	$ 23	$ 0	$ 0	$ 23	$ 23
Value of restructured loans	$ 318,323	$ 152,466																																																											$ 165,857
Minimum amount of nonaccrual status for loans to qualify to be individually evaluated for impairment	1,000,000