Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2013

FirstMerit [Member]

Schedule of Net Benefit Costs [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

The components of net periodic benefit cost are as follows:

	Pension Benefits
	Three months ended June 30,						Six months ended June 30,
	2013			2012			2013			2012
Components of Net Periodic Pension Cost
Service Cost	$	585		$	1,799		$	1,170		$	3,598
Interest Cost	2,632			2,965			5,264			5,930
Expected return on assets	(2,960		)	(3,034		)	(5,920		)	(6,068		)
Amortization of unrecognized prior service costs	117			97			234			194
Cumulative net loss	1,174			2,593			2,348			5,186
Net periodic pension cost	$	1,548		$	4,420		$	3,096		$	8,840

	Postretirement Benefits
	Three months ended June 30,						Six months ended June 30,
	2013			2012			2013			2012
Components of Net Periodic Postretirement Cost
Service Cost	$	25		$	19		$	50		$	38
Interest Cost	130			174			260			348
Amortization of unrecognized prior service costs	(117		)	(117		)	(234		)	(234		)
Cumulative net loss	67			72			134			144
Net periodic postretirement cost	$	105		$	148		$	210		$	296

Citizens Republic Bancorp

Schedule of Net Benefit Costs [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

	Pension Benefits
	Three months ended June 30, 2013
Interest Cost	$	795
Expected return on assets	(1,096		)
Net periodic pension benefit	$	(301	)

	Postretirement Benefits
	Three months ended June 30, 2013
Interest Cost	$	16
Net periodic postretirement cost	$	16