Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2012 Segment Entity	Jun. 30, 2011
Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
Number of operating segments	3
Number of banking centers	43
Percentage of net income	34.00%	34.00%
Maximum
Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
Period to finalize the fair values of acquired assets and assumed liabilities	12 months
Republic Bank and Trust Company | Refund Anticipation Loans
Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
Percentage of net income	34.00%	34.00%
Tennessee Commerce Bank ( "TCB" )
Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
Acquisition date of liabilities and certain assets	Jan. 27, 2012