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Employment Benefit Plans Savings Plan (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended 8 Months Ended 4 Months Ended 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Apr. 30, 2013
Dec. 31, 2012
Minimum [Member]        
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 100.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		      
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent 3.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		      
Maximum [Member]        
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 50.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		      
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent 2.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		      
Successor [Member]        
Defined Contribution Plan, Cost Recognized 1,056us-gaap_DefinedContributionPlanCostRecognized
/ us-gaap_StatementScenarioAxis
= us-gaap_SuccessorMember		 $ 683us-gaap_DefinedContributionPlanCostRecognized
/ us-gaap_StatementScenarioAxis
= us-gaap_SuccessorMember		    
Predecessor [Member]        
Defined Contribution Plan, Cost Recognized     $ 447us-gaap_DefinedContributionPlanCostRecognized
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember		 $ 1,058us-gaap_DefinedContributionPlanCostRecognized
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember