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Commitments (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]      
Expected future rental payments under operating leases in 2016 $ 23,642    
Expected future rental payments under operating leases in 2017 10,079    
Expected future rental payments under operating leases in 2018 9,658    
Expected future rental payments under operating leases in 2019 9,704    
Expected future rental payments under operating leases in 2020 9,519    
Rental expense for noncancelable operating leases 22,418 $ 8,528 $ 7,139
Operating lease expense related to discontinued operations 2,660 $ 2,905 $ 9,641
Capital Addition Purchase Commitments [Member]      
Other Commitments [Line Items]      
Commitments for capital expenditures 220,630    
Construction in Progress [Member]      
Other Commitments [Line Items]      
Commitments for capital expenditures 179,900    
Building Improvements [Member]      
Other Commitments [Line Items]      
Commitments for capital expenditures $ 6,052