Litigation (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Schedule for insurance valuation
Insurance receivable - asbestos, end of the year	$ 118,115
Asbestos Claims [Member]
Schedule for insurance valuation
Insurance receivable - asbestos, beginning of the year	126,206	141,839
Settlement and defense costs paid by insurance carriers	(15,468)	(15,633)
Changes in estimated coverage	7,377	0
Insurance receivable - asbestos, end of the year	$ 118,115	$ 126,206