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Note 10 - Leasing Activities (Tables)
12 Months Ended
Dec. 31, 2015
Notes Tables  
Schedule of Future Minimum Lease Payments for Capital Leases and Operating Leases [Table Text Block]
   
Capital
Leases
   
Operating
Leases
 
2016
  $ 17,181     $ 761  
2017
    18,522       276  
2018
    15,085       119  
2019
    13,528       29  
2020
    13,830        
Thereafter
    13,770        
                 
Total minimum lease payments
  $ 91,916     $ 1,185  
Less amount representing interest
    (8,151 )        
Present value of net minimum capital lease payments
    83,765          
Less current portion
    (14,691 )        
Obligations under capital leases less current portion
  $ 69,074          
Schedule of Future Minimum Rental Receivable for Operating Leases [Table Text Block]
2016
  $ 118,853  
2017
    102,943  
2018
    81,462  
2019
    59,800  
2020
    38,659  
Thereafter
    22,042  
         
Total
  $ 423,759  
Operating Leases of Lessee Disclosure [Table Text Block]
2016
  $ 9,198  
2017
    6,540  
2018
    4,934  
2019
    3,697  
2020
    2,611  
Thereafter
    16,489  
         
Total
  $ 43,469