Accounts Receivable Insurance and Third Party Claims (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Total accounts receivable	$ 375,993	$ 388,671
Proceeds from insurance	15,200	10,400	$ 13,600
Accounts receivable - insurance and other third party claims [Member]
Total accounts receivable	11,994	$ 26,574
North American Operations [Member] | Accounts receivable - insurance and other third party claims [Member]
Total accounts receivable	5,500
U.K./European Operations [Member] | Accounts receivable - insurance and other third party claims [Member]
Total accounts receivable	5,600
Australian Operations [Member] | Accounts receivable - insurance and other third party claims [Member]
Total accounts receivable	$ 800