Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS (Tables)

v3.8.0.1
FAIR VALUE MEASUREMENTS (Tables)
9 Months Ended
Sep. 30, 2017
Fair Value Disclosures [Abstract]  
Available-for-sale Securities [Table Text Block] Available-for-sale investments included in cash equivalents at the end of each period were as follows (in thousands):
 
September 30, 2017
 
December 31, 2016
 
Adjusted Cost
 
Gross Unrealized Gains
(Losses)
 
Fair Value
 
Adjusted Cost
 
Gross Unrealized Losses
 
Fair Value
Municipal bonds and notes
$
2,751

 
$
1

 
$
2,752

 
$
43,490

 
$

 
$
43,490

Corporate debt securities
24,194

 
(13
)
 
24,181

 
1,673

 
(2
)
 
1,671

Financial institution instruments
46,484

 

 
46,484

 
28,307

 

 
28,307

Total available-for-sale investments
$
73,429

 
$
(12
)
 
$
73,417

 
$
73,470

 
$
(2
)
 
$
73,468