XML 22 R37.htm IDEA: XBRL DOCUMENT v3.2.0.727
Fair Value of Financial Instruments and Long Term Debt - Schedule of Maturities of Long-Term Debt Including Capitalzied Leases (Details) - USD ($)
$ in Thousands
Apr. 30, 2015
Apr. 30, 2014
Debt Instrument    
2015 $ 15,398  
2016 15,375  
2017 15,396  
2018 15,417  
2019 15,441  
Thereafter 776,616  
Long-term debt 853,643 $ 854,195
Capital Leases    
Debt Instrument    
2015 398  
2016 375  
2017 396  
2018 417  
2019 441  
Thereafter 7,616  
Long-term debt 9,643  
Senior Notes    
Debt Instrument    
2015 15,000  
2016 15,000  
2017 15,000  
2018 15,000  
2019 15,000  
Thereafter 769,000  
Long-term debt $ 844,000