Employee Benefits (Tables)

12 Months Ended

Dec. 31, 2012

Compensation and Retirement Disclosure [Abstract]

Schedule of Projected Benefit Obligations, Fair Value of Plan Assets and Funded Status

The following table sets forth the plans’ projected benefit obligations, fair value of plan assets and funded status as of and for the years ended December 31, 2012 and 2011.

(Dollars in thousands)	Qualified Pension Plan						Non-Qualified Retirement Plans
At December 31,	2012			2011			2012			2011
Change in Benefit Obligation:
Benefit obligation at beginning of period		$57,257			$46,556			$11,321			$9,953
Service cost	2,574			2,314			150			71
Interest cost	2,823			2,578			503			495
Actuarial loss	9,535			7,298			1,315			1,534
Benefits paid	(1,440		)	(1,371		)	(720		)	(732		)
Administrative expenses	(134		)	(118		)	—			—
Benefit obligation at end of period		$70,615			$57,257			$12,569			$11,321
Change in Plan Assets:
Fair value of plan assets at beginning of period		$38,330			$36,070			$—			$—
Actual return on plan assets	4,322			749			—			—
Employer contribution	10,000			3,000			720			732
Benefits paid	(1,440		)	(1,371		)	(720		)	(732		)
Administrative expenses	(134		)	(118		)	—			—
Fair value of plan assets at end of period		$51,078			$38,330			$—			$—
Unfunded status at end of period		($19,537	)		($18,927	)		($12,569	)		($11,321	)

Schedule of Components of Accumulated Other Comprehensive Income (Loss) Related to Retirements Plans

The components of accumulated other comprehensive income related to the qualified pension plan and non-qualified retirement plans, on a pre-tax basis, are summarized below:

(Dollars in thousands)	Qualified Pension Plan						Non-Qualified Retirement Plans
At December 31,	2012			2011			2012			2011
Net actuarial loss		$23,144			$15,928			$3,938			$2,743
Prior service credit	(221		)	(254		)	(5		)	(7		)
Total pre-tax amounts recognized in accumulated other comprehensive income		$22,923			$15,674			$3,933			$2,736

Schedule of Net Periodic Benefit Costs and Other Amounts Recognized in Other Comprehensive Income

The components of net periodic benefit cost and other amounts recognized in other comprehensive income, on a pre-tax basis, were as follows:

(Dollars in thousands)	Qualified Pension Plan									Non-Qualified Retirement Plans
Years ended December 31,	2012			2011			2010			2012			2011			2010
Net Periodic Benefit Cost:
Service cost		$2,574			$2,314			$2,337			$150			$71			$93
Interest cost	2,823			2,578			2,507			503			495			515
Expected return on plan assets	(2,985		)	(2,794		)	(2,541		)	—			—			—
Amortization of prior service (credit) cost	(33		)	(33		)	(33		)	(1		)	(1		)	8
Recognized net actuarial loss	982			392			340			119			16			19
Net periodic benefit cost		$3,361			$2,457			$2,610			$771			$581			$635
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (on a pre-tax basis):
Net loss (gain)		$7,216			$8,951			($1,104	)		$1,195			$1,517			$388
Prior service cost (credit)	33			33			33			1			1			(8		)
Recognized in other comprehensive income		$7,249			$8,984			($1,071	)		$1,196			$1,518			$380
Total recognized in net periodic benefit cost and other comprehensive income		$10,610			$11,441			$1,539			$1,967			$2,099			$1,015

Schedule of Assumptions Used

The measurement date and weighted-average assumptions used to determine benefit obligations at December 31, 2012 and 2011 were as follows:

	Qualified Pension Plan		Non-Qualified Retirement Plans
	2012	2011	2012	2011
Measurement date	Dec 31, 2012	Dec 31, 2011	Dec 31, 2012	Dec 31, 2011
Discount rate	4.125%	5.000%	3.750%	4.625%
Rate of compensation increase	3.750%	3.750%	3.750%	3.750%

The measurement date and weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31, 2012, 2011 and 2010 were as follows:

	Qualified Pension Plan			Non-Qualified Retirement Plans
	2012	2011	2010	2012	2011	2010
Measurement date	Dec 31, 2011	Dec 31, 2010	Dec 31, 2009	Dec 31, 2011	Dec 31, 2010	Dec 31, 2009
Discount rate	5.000%	5.625%	6.000%	4.625%	5.125%	5.625%
Expected long-term return on plan assets	7.750%	8.000%	8.000%	—	—	—
Rate of compensation increase	3.750%	3.750%	4.250%	3.750%	3.750%	4.250%

Schedule of Allocation of Plan Assets

The asset allocations of the qualified pension plan at December 31, 2012 and 2011, by asset category were as follows:

December 31,	2012		2011
Asset Category:
Equity securities	55.0	%	56.2	%
Fixed securities	30.9	%	39.7	%
Cash and cash equivalents	14.1	%	4.1	%
Total	100.0	%	100.0	%

The following table presents the fair values of the qualified pension plan’s assets at December 31, 2012:

(Dollars in thousands)
	Fair Value Measurements Using						Assets at Fair Value
December 31, 2012	Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents		$7,274		$—		$—		$7,274
Obligations of U.S. government agencies and U.S. government-sponsored enterprises	—		1,059		—		1,059
Mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored enterprises	—		—		—		—
States and political subdivisions	—		2,218		—		2,218
Corporate bonds	—		10,378		—		10,378
Common stocks	15,892		—		—		15,892
Mutual funds	14,750		—		—		14,750
Total plan assets		$37,916		$13,655		$—		$51,571

The following table presents the fair values of the qualified pension plan’s assets at December 31, 2011:

(Dollars in thousands)
	Fair Value Measurements Using						Assets at Fair Value
December 31, 2011	Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents		$1,595		$—		$—		$1,595
Obligations of U.S. government agencies and U.S. government-sponsored enterprises	—		1,786		—		1,786
Mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored enterprises	—		—		—		—
States and political subdivisions	—		1,720		—		1,720
Corporate bonds	—		10,283		—		10,283
Common stocks	15,487		—		—		15,487
Mutual funds	7,459		—		—		7,459
Total plan assets		$24,541		$13,789		$—		$38,330

Schedule of Expected Future Benefit Payments

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid as follows:

(Dollars in thousands)	Qualified Pension Plan		Non-Qualified Plans
2013		$1,816		$731
2014	1,936		738
2015	2,191		767
2016	2,382		766
2017	2,510		759
Years 2018 - 2021	14,386		3,769