Other Current Liabilities (Schedule of Other Current Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current Liabilities [Abstract]
Pension and other post retirement liabilities	$ 18,097	$ 18,157
Indemnification liabilities	4,315	5,835
Deferred tax liability	983	3,663
Other	3,051	4,434
Other current liabilities, Total	$ 26,446	$ 32,089