XML 86 R69.htm IDEA: XBRL DOCUMENT v3.3.1.900
Lease Obligations (Narrative) (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
USD ($)
item
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Rent expense $ 13,960 $ 10,427 $ 6,891
Payment of base rent in 2016 $ 1,056    
Rock Hill Facility [Member]      
Lease expiration date Aug. 31, 2021    
Number of lease renewal terms | item 2    
Lease renewal terms 5 years    
Payment of base rent in 2015 $ 669    
Payment of base rent in 2016 683    
Payment of base rent in 2017 through 2020 709    
Payment of base rent in 2021 $ 723    
Implicit interest rate 6.93% 6.93%  
Other Capital Lease Obligations [Member]      
Lease expiration date Aug. 01, 2018    
Minimum [Member] | Other Capital Lease Obligations [Member]      
Implicit interest rate 1.75% 1.75%  
Maximum [Member] | Other Capital Lease Obligations [Member]      
Implicit interest rate 8.06% 8.06%