Operating Leases (Future Minimum Annual Rentals) (Details) $ in Thousands	Dec. 31, 2015 USD ($)
Property Subject to or Available for Operating Lease [Line Items]
2016	$ 123,388
2017	86,546
2018	52,776
2019	25,928
2020	11,492
2021 and thereafter	1,579
Total	301,709
Leased Facilities and Equipment [Member]
Property Subject to or Available for Operating Lease [Line Items]
2016	95,789
2017	68,833
2018	44,949
2019	24,486
2020	11,492
2021 and thereafter	1,579
Total	247,128
Leased Vehicles [Member]
Property Subject to or Available for Operating Lease [Line Items]
2016	27,599
2017	17,713
2018	7,827
2019	1,442
2020	0
2021 and thereafter	0
Total	$ 54,581