Subsequent Events (Details) (USD $) In Thousands, unless otherwise specified		3 Months Ended	12 Months Ended
	Jul. 31, 2013	Dec. 31, 2013 Voluntary Early Retirement Program [Member]	Dec. 31, 2014 Pension Plan Benefit Freeze [Member]
Statement [Line Items]
Number of VERP eligible employees	1,200
Subsequent Event, Amount, Lower Range		$ 40,000
Subsequent Event, Amount, Higher Range		70,000
Subsequent Event, Amount			$ 30,000