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Cash and Cash Equivalents and Restricted Cash Cash and Cash Equivalents - Geographic Information (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Sep. 04, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Cash and Cash Equivalents [Line Items]          
Total cash and cash equivalents $ 52,966   $ 112,521 $ 76,174 $ 44,593
United States [Member]          
Cash and Cash Equivalents [Line Items]          
Total cash and cash equivalents 8,458   43,546    
CHINA          
Cash and Cash Equivalents [Line Items]          
Total cash and cash equivalents 28,681   45,283    
Asia, Excluding The People's Republic of China [Member]          
Cash and Cash Equivalents [Line Items]          
Total cash and cash equivalents 5,346   5,516    
Europe [Member]          
Cash and Cash Equivalents [Line Items]          
Total cash and cash equivalents 8,093   12,912    
South America [Member]          
Cash and Cash Equivalents [Line Items]          
Total cash and cash equivalents $ 2,388   $ 5,264    
Surety Bond [Member]          
Cash and Cash Equivalents [Line Items]          
Restricted Cash   $ 4,600