Accounts Receivable Insurance and Third-Party Claims (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 401,427,000		$ 363,104,000
Proceeds from insurance	1,400,000	300,000
Accounts receivable - insurance and other third-party claims
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	22,576,000		26,941,000
North American & European Operations [Member] | Accounts receivable - insurance and other third-party claims
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	13,500,000
Australia Operations [Member] | Accounts receivable - insurance and other third-party claims
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 9,000,000