Contractual interest rate for funds borrowed, under the debt agreement.

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Debt (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
Debt (Details) - USD ($) $ in Thousands	Mar. 16, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Long Term Debt
Repayments of debt		$ 60,557	$ 76,412	$ 488,008	$ 132,658
Senior Notes
Long Term Debt
Repayments of debt	$ 350,000
Stated interest rate (as a percent)	7.625%
Redemption price of debt instrument (as a percent)	103.813%
Associated premiums and related expenses recorded	$ 16,700