Other Income (Loss), Net (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Other Nonoperating Income Expense Net [Line Items] [Line Items]
Other income (loss), net	$ 7,121	$ 9,135	$ 13,690
Gain on expiration/settlement of customer advances, net [Member]
Other Nonoperating Income Expense Net [Line Items] [Line Items]
Other income (loss), net	7,798	7,605	4,973
Litigation settlement proceeds [Member]
Other Nonoperating Income Expense Net [Line Items] [Line Items]
Other income (loss), net	854	1,495	3,364
Split dollar life insurance policy settlement [Member]
Other Nonoperating Income Expense Net [Line Items] [Line Items]
Other income (loss), net	0	0	4,454
Other, net [Member]
Other Nonoperating Income Expense Net [Line Items] [Line Items]
Other income (loss), net	$ (1,531)	$ 35	$ 899