Fair Values (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Recurring basis | Total
Assets and liabilities recorded at fair value
Derivative assets	$ 8,660
Derivative liabilities		2,373
Recurring basis | Quoted market prices in active markets (Level 1)
Assets and liabilities recorded at fair value
Derivative assets	0
Derivative liabilities		0
Recurring basis | Significant other observable inputs (Level 2)
Assets and liabilities recorded at fair value
Derivative assets	8,660
Derivative liabilities		2,373
Recurring basis | Significant unobservable inputs (Level 3)
Assets and liabilities recorded at fair value
Derivative assets	0
Derivative liabilities		0
Non-recurring basis | Total
Assets and liabilities recorded at fair value
Impaired loans	93,100	271,968
Impaired net lease assets	5,235
Impaired OREO		43,660
Non-recurring basis | Quoted market prices in active markets (Level 1)
Assets and liabilities recorded at fair value
Impaired loans	0	0
Impaired net lease assets	0
Impaired OREO		0
Non-recurring basis | Significant other observable inputs (Level 2)
Assets and liabilities recorded at fair value
Impaired loans	0	0
Impaired net lease assets	0
Impaired OREO		0
Non-recurring basis | Significant unobservable inputs (Level 3)
Assets and liabilities recorded at fair value
Impaired loans	93,100	271,968
Impaired net lease assets	5,235
Impaired OREO		$ 43,660