Commitments and Contingencies (Future Minimum Lease Payments And Future Minimum Income Receivable Under Non-Cancelable Operating Leases) (Details) $ in Thousands	Dec. 31, 2015 USD ($)
Commitments and Contingencies Disclosure [Abstract]
2016, Lease Payments	$ 30,822
2017, Lease Payments	26,488
2018, Lease Payments	23,074
2019, Lease Payments	20,259
2020, Lease Payments	16,177
Thereafter, Lease Payments	43,852
Total, Lease Payments	160,672
2016, Sublease Income	1,291
2017, Sublease Income	1,461
2018, Sublease Income	1,167
2019, Sublease Income	1,152
2020, Sublease Income	1,168
Thereafter, Sublease	4,759
Total, Sublease Income	$ 10,998