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LONG-TERM DEBT: (Details 2) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Mar. 31, 2013
Future obligations, excluding interest, under the entity's long-term debt    
2015 $ 28,567  
2016 33,095  
2017 33,244  
2018 40,977  
2019 175,417  
Thereafter 6,310  
Total $ 317,610 $ 253,505