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Note 10 - Leasing Activities (Tables)
12 Months Ended
Dec. 31, 2014
Leases [Abstract]  
Schedule of Future Minimum Lease Payments for Capital Leases and Operating Leases [Table Text Block]
   

Capital

Leases

   

Operating

Leases

 

2015

  $ 12,903     $ 1,257  

2016

    11,176       447  

2017

    12,549       131  

2018

    9,113       73  

2019

    6,818       28  

Thereafter

    10,051        
                 

Total minimum lease payments

  $ 62,610     $ 1,936  

Less amount representing interest

    (5,360 )        

Present value of net minimum capital lease payments

    57,250          

Less current portion

    (11,231 )        

Obligations under capital leases less current portion

  $ 46,019          
Schedule of Future Minimum Rental Receivable for Operating Leases [Table Text Block]

2015

  $ 103,992  

2016

    91,383  

2017

    73,073  

2018

    51,156  

2019

    31,109  

Thereafter

    18,550  
         

Total

  $ 369,263  
Operating Leases of Lessee Disclosure [Table Text Block]

2015

  $ 11,640  

2016

    8,664  

2017

    5,888  

2018

    4,461  

2019

    3,315  

Thereafter

    9,426  
         

Total

  $ 43,394