Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred tax assets:
Tax credit carryforwards	$ 26,945	$ 25,290
Pension, compensation and other employee benefits	23,835	31,782
Provisions for losses	13,674	15,229
State income taxes	2,170	2,813
Net operating loss carryforward	4,794	1,755
Other deferred income tax assets	5,552	5,331
Total deferred tax assets	(76,970)	(82,200)
Valuation allowance	(12,393)	(14,576)
Net deferred tax assets	62,864	66,634
Deferred tax liabilities:
Property and equipment	(7,861)	(8,801)
Goodwill and other intangible assets	(959)	(1,306)
Unremitted foreign earnings	(398)	(978)
Deferred tax related to life insurance	(4,842)	(4,992)
Other deferred income tax liabilities	(393)	(176)
Total deferred tax liabilities	(14,453)	(16,253)
Foreign deferred tax liabilities included above	(1,989)	(2,024)
United States deferred tax assets	50,400	52,405
Foreign Tax Authority
Deferred tax assets:
Total deferred tax assets	$ (1,713)	$ (990)