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Note 10 - Asset Retirement Obligations
6 Months Ended
Jun. 30, 2018
Notes to Financial Statements  
Asset Retirement Obligation Disclosure [Text Block]
NOTE
10.
ASSET RETIREMENT OBLIGATIONS
 
Our asset retirement obligations include the costs associated with the removal of structures, resurfacing of the land and retirement cost, if applicable, related to our outdoor advertising assets. The following table reflects information related to our asset retirement obligations:
 
Balance, December 31, 2017
  $
-
 
Additions
   
179,917
 
Accretion expense
   
5,995
 
Liabilities settled
   
(11,243
)
         
Balance, June 30, 2018
  $
174,669