Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2013

Compensation and Retirement Disclosure [Abstract]

Amounts included in Accumulated other comprehensive income, before tax

December 31,	2013		2012
(Dollars in thousands)
Net prior service costs	$	18,833	$	22,438
Net actuarial loss		(20,713)		(36,510)
	$	(1,880)	$	(14,072)

Amounts included in comprehensive income

Year Ended December 31, 2013	Before-Tax		Deferred Income Tax Benefit (Expense)		Net-of-Tax
(Dollars in thousands)
Net actuarial gains (losses)	$	13,345	$	(5,086)	$	8,259
Amortization of prior service costs		(3,605)		1,374		(2,231)
Amortization of actuarial losses		2,452		(934)		1,518
Total gains (losses) recognized in Comprehensive income	$	12,192	$	(4,646)	$	7,546
Year Ended December 31, 2012	Before-Tax		Deferred Income Tax Benefit (Expense)		Net-of-Tax
(Dollars in thousands)
Net actuarial gains (losses)	$	90	$	(143)	$	(53)
Amortization of prior service costs		(3,735)		5,950		2,215
Amortization of actuarial losses		2,517		(4,010)		(1,493)
Total gains (losses) recognized in Comprehensive income	$	(1,128)	$	1,797	$	669

Funded status of post-retirement benefit plans

December 31,		2013		2012
(Dollars in thousands)
Change in benefit obligation
	Benefit obligation at beginning of year	$	54,568	$	50,113
	Service cost		1,348		1,197
	Interest cost		2,137		2,297
	Actuarial (gain) loss		(9,437)		3,179
	Prescription drug subsidy		-		542
	Benefits paid		(2,474)		(2,760)
	Benefit obligation at end of year		46,142		54,568
Change in plan assets
	Fair value of plan assets at beginning of year		45,047		41,267
	Actual return (loss) on plan assets		6,973		6,264
	Employer contribution		197		276
	Benefits paid		(2,474)		(2,760)
	Fair value of plan assets at end of year		49,743		45,047
Funded status		$	3,601	$	(9,521)

Fair value of plan assets

December 31, 2013
(Dollars in thousands)		Level 1		Level 2		Level 3		Total
Mutual funds
	Bond	$	12,697	$	-	$	-	$	12,697
	International equity		9,876		-		-		9,876
	Money market		1,798		-		-		1,798
	US large cap		20,861		-		-		20,861
	US small cap		4,500		-		-		4,500
Other			-		11		-		11
Total plan assets at fair value		$	49,732	$	11	$	-	$	49,743
December 31, 2012
(Dollars in thousands)			Level 1		Level 2		Level 3		Total
Mutual funds
	Bond	$	11,285	$	-	$	-	$	11,285
	International equity		8,868		-		-		8,868
	Money market		1,983		-		-		1,983
	US large cap		18,823		-		-		18,823
	US small cap		4,074		-		-		4,074
Other			-		14		-		14
Total plan assets at fair value		$	45,033	$	14	$	-	$	45,047

Plan asset investment allocation

			Allocation of Plan Assets
			at December 31,
Investment	Target Asset
Category	Allocation		2013		2012
U.S. equities	50	%	51.0	%	50.8	%
International equities	20	%	19.9	%	19.7	%
Debt securities	30	%	29.1	%	29.5	%

Net periodic benefit cost

Net periodic benefit cost recorded in the Consolidated Statement of Operations includes the following components:
Year Ended December 31,		2013		2012		2011
(Dollars in thousands)
Service cost		$	1,348	$	1,197	$	1,116
Interest cost			2,137		2,297		2,368
Expected return on plan assets			(3,065)		(2,995)		(3,496)
Amortization of prior service costs (1)			(3,605)		(3,735)		(3,815)
Amortization of actuarial losses (2)			2,452		2,517		1,934
Net post-retirement cost		$	(733)	$	(719)	$	(1,893)
(1)	Based on straight-line amortization over the average time remaining before active employees become fully eligible for plan benefits.
(2)	Based on straight-line amortization over the average time remaining before active employees retire.

Assumptions used to calculate net periodic benefit cost

The following assumptions were used to determine benefit obligations and net periodic benefit cost:
December 31,	2013		2012
Benefit obligations
Discount rate	5.00	%	4.00	%
Net periodic benefit cost
Discount rate	4.00	%	4.70	%
Expected return on plan assets	7.00	%	7.50	%

Change in health care cost trend rate

	One Percent
	Increase		Decrease
(Dollars in thousands)
Effect on total service and interest cost components	$	18	$	(17)
Effect on post-retirement benefit obligation	$	301	$	(281)

Estimated future post-retirement benefit payments

	Estimated Future
	Post-Retirement
Year	Benefit Payments
(Dollars in thousands)
2014	$	2,082
2015		2,059
2016		2,143
2017		2,117
2018		2,138
2019-2023		13,294