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FAIR VALUE DISCLOSURES (Tables)
6 Months Ended
Jun. 30, 2018
FAIR VALUE DISCLOSURES  
Schedule of valuation of financial instruments measured at fair value on a recurring basis
    Fair Value Measurements at June 30, 2018 with:  
(in thousands)   Total     Quoted prices in 
active markets 
for identical 
assets
    Significant 
other 
observable 
inputs
    Significant 
unobservable 
inputs
 
          (Level 1)     (Level 2)     (Level 3)  
Assets:                        
Equity securities   $ 320     $ 320     $     $  
Investments measured at net asset value   $ 24,705                          

 

    Fair Value Measurements at December 31, 2017  with:  
(in thousands)   Total     Quoted prices in 
active markets 
for identical 
assets
    Significant 
other 
observable 
inputs
    Significant 
unobservable 
inputs
 
          (Level 1)     (Level 2)     (Level 3)  
Assets:                        
Equity securities   $ 270     $ 270     $     $  
Investments measured at net asset value   $ 23,463