Consolidated Statements of Changes in Equity (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Amortization of terminated hedge, income tax effect	$ 120	$ 120	$ 120
Unrealized derivative gains and losses on cash flow hedges, income tax effect	6,390	6,390	14,363
Minimum pension liability, income tax effect	$ 5,670	$ 1,898	$ 4,691