Contingencies (Details) $ in Thousands			3 Months Ended
	Mar. 07, 2016 USD ($)	Apr. 21, 2012 USD ($)	Feb. 27, 2016 Juror
Loss Contingencies [Line Items]
Number of jurors | Juror			6
TransWeb [Member]
Loss Contingencies [Line Items]
Gain contingency not yet recognized		$ 26,147
Settled Litigation [Member] | TransWeb [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Gain contingency not yet recognized	$ 27,250