Employee Benefits (Tables)

12 Months Ended

Dec. 31, 2014

Compensation and Retirement Disclosure [Abstract]

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

The following table presents the plans’ projected benefit obligations, fair value of plan assets and (unfunded) funded status:

(Dollars in thousands)	Qualified Pension Plan						Non-Qualified Retirement Plans
At December 31,	2014			2013			2014			2013
Change in Benefit Obligation:
Benefit obligation at beginning of period		$61,162			$70,615			$10,784			$12,569
Service cost	2,152			2,720			46			181
Interest cost	2,891			2,883			478			462
Actuarial loss (gain)	11,081			(8,809		)	2,546			(1,332		)
Benefits paid	(3,981		)	(2,004		)	(757		)	(736		)
Administrative expenses	(156		)	(182		)	—			—
Curtailments	—			(4,061		)	—			(360		)
Benefit obligation at end of period	73,149			61,162			13,097			10,784
Change in Plan Assets:
Fair value of plan assets at beginning of period	62,060			51,078			—			—
Actual return on plan assets	3,690			8,168			—			—
Employer contributions	6,000			5,000			757			736
Benefits paid	(3,981		)	(2,004		)	(757		)	(736		)
Administrative expenses	(156		)	(182		)	—			—
Fair value of plan assets at end of period	67,613			62,060			—			—
(Unfunded) funded status at end of period		($5,536	)		$898			($13,097	)		($10,784	)

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

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

(Dollars in thousands)	Qualified Pension Plan						Non-Qualified Retirement Plans
At December 31,	2014			2013			2014			2013
Net actuarial loss		$15,504			$4,510			$4,548			$2,071
Prior service credit	(107		)	(130		)	(3		)	(3		)
Total pre-tax amounts recognized in accumulated other comprehensive income		$15,397			$4,380			$4,545			$2,068

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

The following table presents components of net periodic benefit cost and other amounts recognized in other comprehensive income, on a pre-tax basis:

(Dollars in thousands)	Qualified Pension Plan									Non-Qualified Retirement Plans
Years ended December 31,	2014			2013			2012			2014			2013			2012
Net Periodic Benefit Cost:
Service cost		$2,152			$2,720			$2,574			$46			$181			$150
Interest cost	2,891			2,883			2,823			478			462			503
Expected return on plan assets	(4,063		)	(3,725		)	(2,985		)	—			—			—
Amortization of prior service (credit) cost	(23		)	(30		)	(33		)	(1		)	(1		)	(1		)
Recognized net actuarial loss	461			1,321			982			70			175			119
Curtailments	—			(61		)	—			—			(1		)	—
Net periodic benefit cost	1,418			3,108			3,361			593			816			771
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (on a pre-tax basis):
Net loss (gain)	10,993			(14,572		)	7,216			2,476			(1,506		)	1,195
Prior service cost (credit)	23			30			33			1			1			1
Curtailments	—			(4,000		)	—			—			(359		)	—
Recognized in other comprehensive income	11,016			(18,542		)	7,249			2,477			(1,864		)	1,196
Total recognized in net periodic benefit cost and other comprehensive income		$12,434			($15,434	)		$10,610			$3,070			($1,048	)		$1,967

Schedule of Assumptions Used

The following table presents the measurement date and weighted-average assumptions used to determine benefit obligations at December 31, 2014 and 2013:

	Qualified Pension Plan		Non-Qualified Retirement Plans
	2014	2013	2014	2013
Measurement date	Dec 31, 2014	Dec 31, 2013	Dec 31, 2014	Dec 31, 2013
Discount rate	4.125%	4.875%	3.900%	4.600%
Rate of compensation increase	3.750	3.750	3.750	3.750

The following table presents the measurement date and weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31, 2014, 2013 and 2012:

	Qualified Pension Plan			Non-Qualified Retirement Plans
	2014	2013	2012	2014	2013	2012
Measurement date	Dec 31, 2013	Dec 31, 2012	Dec 31, 2011	Dec 31, 2013	Dec 31, 2012	Dec 31, 2011
Discount rate	4.875%	4.125%	5.000%	4.600%	3.800%	4.625%
Expected long-term return on plan assets	7.250	7.250	7.750	—	—	—
Rate of compensation increase	3.750	3.750	3.750	3.750	3.750	3.750

Schedule of Fair Value and Allocation of Plan Assets

The following table present the asset allocations of the qualified pension plan, by asset category:

December 31,	2014		2013
Asset Category:
Equity securities	61.6	%	63.8	%
Fixed securities	37.8		32.6
Cash and cash equivalents	0.6		3.6
Total	100.0	%	100.0	%

The following tables present the fair values of the qualified pension plan’s assets:

(Dollars in thousands)
	Fair Value Measurements Using						Assets at Fair Value
December 31, 2014	Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents		$637		$—		$—		$637
Obligations of U.S. government agencies and U.S. government-sponsored enterprises	—		4,197		—		4,197
Obligations of states and political subdivisions	—		2,953		—		2,953
Corporate bonds	—		13,162		—		13,162
Common stocks	31,172		—		—		31,172
Mutual funds	15,492		—		—		15,492
Total plan assets		$47,301		$20,312		$—		$67,613

(Dollars in thousands)
	Fair Value Measurements Using						Assets at Fair Value
December 31, 2013	Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents		$2,236		$—		$—		$2,236
Obligations of U.S. government agencies and U.S. government-sponsored enterprises	—		2,025		—		2,025
Obligations of states and political subdivisions	—		2,218		—		2,218
Corporate bonds	—		11,069		—		11,069
Common stocks	24,406		—		—		24,406
Mutual funds	20,106		—		—		20,106
Total plan assets		$46,748		$15,312		$—		$62,060

Schedule of Expected Future Benefit Payments

The following table presents the benefit payments, which reflect expected future service, as appropriate, expected to be paid:

(Dollars in thousands)	Qualified Pension Plan		Non-Qualified Plans
2015		$4,355		$791
2016	3,611		792
2017	3,222		785
2018	3,146		779
2019	2,956		786
Years 2020 - 2023	21,798		3,990