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Note 9 - Senior Notes, Credit Facilities and Capital Leases (Tables)
3 Months Ended
Mar. 31, 2014
Debt Disclosure [Abstract]  
Schedule of Line of Credit Facilities [Table Text Block]
   

Previous Facility

 

Current Facility

Interest rates:

               

Spread over the London Interbank Offer Rate

  3.00 - 4.50%   2.25  - 3.25%

Spread over alternative base rate

  2.00 - 3.50%   1.25  - 2.25%
                 

Standby fee per annum on undrawn amounts

  0.825 - 1.05%     0.50%  
                 

Covenant financial ratios:

               

Senior leverage ratio (debt secured by liens/EBITDA)

 

not more than 2.50:1

Leverage ratio (total debt less unencumbered cash/EBITDA)

 

not more than 4.00:1

Interest coverage ratio (EBITDA/interest expense)

not less than 3.00:1

Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]
 

Twelve-month period ending March 31,

         
 

2015

  $ 8,903    
 

2016

    8,162    
 

2017

    4,918    
 

2018

    1,601    
 

Total

    23,584    
 

Less: imputed interest

    (1,054

)

 
 

Net capital lease obligation

  $ 22,530