Contingencies (Details) - TransWeb [Member] $ in Thousands	Mar. 07, 2016 USD ($)	Apr. 21, 2014 USD ($) Juror
Loss Contingencies [Line Items]
Number of jurors | Juror		6
Gain contingency not yet recognized		$ 26,147
Settled Litigation [Member]
Loss Contingencies [Line Items]
Gain contingency not yet recognized	$ 27,250