XML 115 R93.htm IDEA: XBRL DOCUMENT v3.8.0.1
Segment Information - Revenue From External Customers and Long-Lived Assets, by Geographical Areas (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenue $ 118,322 $ 108,083 $ 117,659 $ 110,731 $ 107,985 $ 105,114 $ 120,946 $ 153,486 $ 454,795 $ 487,531 $ 974,600
Property, plant and equipment, net 469,646       567,024       469,646 567,024 624,959
United States                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenue                 244,684 247,864 530,133
Property, plant and equipment, net 272,342       319,111       272,342 319,111  
Europe/Middle East/Africa                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenue                 138,304 160,651 314,173
Latin America                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenue                 33,131 35,390 56,515
Asia Pacific                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenue                 20,573 30,325 55,995
Other countries                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenue                 18,103 13,301 $ 17,784
International                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Property, plant and equipment, net $ 197,304       $ 247,913       $ 197,304 $ 247,913