Going Concern (Details) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015 USD ($)
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Level of indebtedness		$ 1,137,000
Consolidated Funded Debt to consolidated EBITDA financial ratio covenant		3.09
Covenant Compliance [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Consolidated Funded Debt to consolidated EBITDA financial ratio covenant		3.75
Covenant Compliance [Member] | Scenario, Forecast [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Consolidated Funded Debt to consolidated EBITDA financial ratio covenant	3.75
Senior Notes [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Level of indebtedness		$ 1,075,000