XML 57 R43.htm IDEA: XBRL DOCUMENT v3.10.0.1
Accounting Policies - Cash used in investing activities (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Condensed Cash Flow Statements, Captions [Line Items]        
Cash used in investing activities     $ (64,266) $ (100,651)
Cost of sales $ 482,029 $ 494,379 1,411,197 1,389,294
Selling, general and administrative expenses $ 22,909 21,290 $ 73,613 64,508
Accounting Standards Update 2016-08        
Condensed Cash Flow Statements, Captions [Line Items]        
Cost of sales   (1,000)   (2,600)
Selling, general and administrative expenses   $ 200   800
Cash used in investing activities previously reported        
Condensed Cash Flow Statements, Captions [Line Items]        
Cash used in investing activities       (29,603)
Withdrawals of restricted cash | Accounting Standards Update 2016-08        
Condensed Cash Flow Statements, Captions [Line Items]        
Cash used in investing activities       $ 71,048