Merger, Acquisition and Other Integration Expenses (Details) (USD $) In Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2011
Schedule of business combination integration expenses
Professional fees	$ 909	$ 42,398
Termination, severance and transitional employee costs	11,107	45,444
Office closure, travel and other costs	667	23,012
Write-off of deferred loan costs		10,869
Total	$ 12,683	$ 121,723