Employee Retirement Benefits (Tables)

12 Months Ended

Dec. 31, 2012

Employee Retirement Benefits [Abstract]

Employee post-retirement benefits

The following table summarizes the balance sheet impact, including the benefit obligations and assets associated with our post-retirement benefit plans as of December 31, 2012 and 2011, respectively.

(Dollars in thousands)	2012			2011
Change in benefit obligation
Benefit obligation at beginning of year	$	17,326		$	14,971
Service cost		599			509
Interest cost		797			799
Amendments		(7,306	)		(216	)
Actuarial loss		(918	)		1,632
Benefits paid		(488	)		(369	)
Valuation adjustment		1,034			-
Benefit obligation at end of year	$	11,044		$	17,326

Net Periodic Benefit Cost

	As of December 31
(Dollars in thousands)	2012			2011			2010
Components of net periodic benefit cost
Service cost	$	599		$	509		$	452
Interest cost		797			799			723
Expected return on plan assets		-			-			-
Amortization of transition obligation		60			60			60
Amortization of prior service cost		(76	)		(55	)		(55	)
Recognized net actuarial loss		630			429			391
Net periodic benefit cost	$	2,010		$	1,742		$	1,571
Discount rate used to determine benefit obligation
As of December 31:		4.4	%		4.4	%		5.4	%

Schedule of health care cost trend rates

Health Care Trend Rates for the Year Ending December 31, 2012

Year	Pre-Medicare			Post-Medicare
2013		8.50	%		7.00	%
2014		8.00	%		6.90	%
2015		7.50	%		6.80	%
2016		7.00	%		6.70	%
2017		6.50	%		6.60	%
2018		6.00	%		6.50	%
2019		5.50	%		6.40	%
2020		5.00	%		6.30	%
Ultimate		4.50	%		4.50	%
Ultimate Reached in Year		2021			2038

Schedule of effect of one-percentage-point change in assumed health Care cost trend rates

(Dollars in thousands)

Effect of 1% Increase and 1% Decrease in Trend Rate	1% Increase			1% Decrease
Accumulated post-retirement benefit obligation as of December 31, 2012
Dollar change	$	294		$	(256	)
Percentage change		2.85	%		(2.48	%)
Service cost and interest cost
Dollar change	$	286		$	(223	)