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STOCKHOLDERS' EQUITY (Tables)
 6 Months Ended
Jun. 30, 2018
Equity [Abstract]  
Changes in accumulated other comprehensive income
The changes in accumulated other comprehensive income are included in the table below.
 
 
Six Months Ended June 30, 2018
(in thousands)
 
Unrealized Gains
and Losses on
Short-term Investments
 
Foreign
Currency
Items
 
Total
Beginning balance
 
$
(23
)
 
$
122

 
$
99

Other comprehensive income before reclassifications
 
10

 
—

 
10

Amounts reclassified from accumulated other comprehensive income
 
—

 
—

 
—

Net current period other comprehensive income
 
10

 
—

 
10

Ending Balance
 
$
(13
)
 
$
122

 
$
109