Long-term Debt Textuals (Details) (USD $)	3 Months Ended	6 Months Ended			3 Months Ended	6 Months Ended			3 Months Ended	6 Months Ended	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 7.875% Senior Notes due November 2026	Jun. 30, 2014 Junior Subordinated Debt [Member]	Jun. 30, 2014 Junior Subordinated Debt [Member]	Jun. 30, 2013 Australian Bonds [Member]	Jun. 30, 2013 Term Loan & 2011 Term Loan [Member]	Jun. 30, 2014 Voluntary Loan Repayments [Member]	Jun. 30, 2014 Voluntary Loan Repayments [Member]	Jun. 30, 2014 Amount Per Principal Amount [Member] Junior Subordinated Debt [Member]	Jun. 30, 2014 Principal Amount [Member] Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Stated interest rate - percentage				7.875%
Payments of consent fees		$ 10,100,000	$ 0		$ 10,100,000						$ 15	$ 1,000
Third party fees classified in interest expense					1,600,000	1,600,000
Repayments of long-term debt		10,400,000	215,600,000				32,400,000	167,000,000	0	0
Loss on debt extinguishment	$ 4,500,000		$ 5,400,000