Pension (Plan Asset Allocation, Fair Value) (Details) (Defined Benefit Pension Plans and SERP, USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 403,249	$ 382,266	$ 274,029
Level One
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level Two
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	343,018	328,410
Level Three
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	60,231	53,856	38,961
Total
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	403,249	382,266
Cash and Cash Equivalents | Level One
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Cash and Cash Equivalents | Level Two
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	11,136	781
Cash and Cash Equivalents | Level Three
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Cash and Cash Equivalents | Total
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	11,136	781
Real Estate | Level One
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Real Estate | Level Two
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	14,543	15,613
Real Estate | Level Three
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5,105	6,305
Real Estate | Total
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	19,648	21,918
Equity Securities | Level One
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Equity Securities | Level Two
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	177,413	149,902
Equity Securities | Level Three
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Equity Securities | Total
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	177,413	149,902
Debt Securities | Level One
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Debt Securities | Level Two
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	139,926	162,114
Debt Securities | Level Three
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Debt Securities | Total
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	139,926	162,114
Hedge Funds | Level One
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Hedge Funds | Level Two
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Hedge Funds | Level Three
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	55,126	47,551
Hedge Funds | Total
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 55,126	$ 47,551