Accounts Receivable Insurance and Third Party Claims (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Total accounts receivable	$ 388,671	$ 363,104
Proceeds from insurance	10,400	13,600	$ 11,100
Accounts receivable - insurance and other third party claims [Member]
Total accounts receivable	26,574	$ 26,941
North American Operations [Member] | Accounts receivable - insurance and other third party claims [Member]
Total accounts receivable	12,800
Australian Operations [Member] | Accounts receivable - insurance and other third party claims [Member]
Total accounts receivable	8,100
U.K./European Operations [Member] | Accounts receivable - insurance and other third party claims [Member]
Total accounts receivable	$ 5,700