XML 46 R36.htm IDEA: XBRL DOCUMENT v3.8.0.1
Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Feb. 03, 2017
Business Acquisition [Line Items]      
Cash flows from investing activities $ 15,795 $ 112 [1]  
Cash flows from operating activities (9,540) 23,294 [1]  
Cash flows from financing activities $ 16,981 (17,193) [1]  
Accounting Standards Update 2016-15      
Business Acquisition [Line Items]      
Cash flows from operating activities   1,100  
Cash flows from financing activities   8,400  
Investing Activities to Operating Activities | Accounting Standards Update 2016-15      
Business Acquisition [Line Items]      
Cash flows from investing activities   1,100  
Investing Activities to Financing Activities | Accounting Standards Update 2016-15      
Business Acquisition [Line Items]      
Cash flows from investing activities   $ 8,400  
Perigee Energy, LLC      
Business Acquisition [Line Items]      
Percentage of membership interests acquired     100.00%
[1] Financial information has been recast to include results attributable to the acquisition of Perigee Energy, LLC by an affiliate on February 3, 2017. See Notes 2 and 4, "Basis of Presentation and Summary of Significant Accounting Policies" and "Acquisitions," respectively, for further discussion.