XML 45 R32.htm IDEA: XBRL DOCUMENT v3.8.0.1
Recent Accounting Pronouncements Recent Accounting Pronouncements (Details) - USD ($)
3 Months Ended
Mar. 31, 2018
Apr. 01, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Restricted cash $ 26,818,000 $ 0
Accounting Standards Update 2017-07    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Prior Period Reclassification Adjustment $ 5,161