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Note 6 - Long-term Debt and Capital Leases (Tables)
 9 Months Ended
Feb. 28, 2017
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
 
 
February 28,
2017
 
 
May 31
, 2016
 
Senior unsecured notes
 
$
212,546
 
 
$
212,546
 
Unamortized discount
 
 
(
1,476
)
 
 
(1,771
)
Unamortized debt issuance costs
 
 
(
2,497
)
 
 
(2,995
)
Senior unsecured notes less unamortized discount and
 
 
 
 
 
 
 
 
 
debt issuance costs
 
 
208,573
 
 
 
207,780
 
Senior credit facility
 
 
–
 
 
 
–
 
Mortgage loan obligations
 
 
5,135
 
 
 
15,745
 
Unamortized (discount)/premium - mortgage loan obligations
 
 
(2
)
 
 
75
 
Unamortized debt issuance costs - mortgage loan obligations
 
 
(31
)
 
 
(74
)
Capital lease obligations
 
 
207
 
 
 
211
 
   Total long-term debt and capital leases
 
 
213,882
 
 
 
223,737
 
Less current maturities
 
 
349
 
 
 
9,934
 
   Long-term debt and capital leases, less current maturities
 
$
213
,533
 
 
$
213,803