Derivatives and Hedging Activities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Other Assets [Member]
Fair value of Company's derivative financial instruments and their classification on Consolidated Balance Sheets
Derivative Assets	$ 14,535	$ 20,879
Other Liabilities [Member]
Fair value of Company's derivative financial instruments and their classification on Consolidated Balance Sheets
Derivative Liabilities	20,943	19,931
Interest rate products [Member] \| Other Assets [Member] \| Derivatives designated as hedging instruments [Member]
Fair value of Company's derivative financial instruments and their classification on Consolidated Balance Sheets
Derivative Assets	1,110	3,791
Interest rate products [Member] \| Other Assets [Member] \| Derivatives not designated as hedges [Member]
Fair value of Company's derivative financial instruments and their classification on Consolidated Balance Sheets
Derivative Assets	13,425	17,088
Interest rate products [Member] \| Other Liabilities [Member] \| Derivatives designated as hedging instruments [Member]
Fair value of Company's derivative financial instruments and their classification on Consolidated Balance Sheets
Derivative Liabilities	6,979	2,317
Interest rate products [Member] \| Other Liabilities [Member] \| Derivatives not designated as hedges [Member]
Fair value of Company's derivative financial instruments and their classification on Consolidated Balance Sheets
Derivative Liabilities	$ 13,964	$ 17,614

Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

+ References+ Details

- Definition

Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

+ References+ Details

CITIZENS REPUBLIC BANCORP, INC. 10-K