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STATEMENTS OF CASH FLOWS DATA
12 Months Ended
Dec. 31, 2019
Supplemental Cash Flow Elements [Abstract]  
STATEMENTS OF CASH FLOWS DATA

10. STATEMENTS OF CASH FLOWS DATA

 

 

 

Year Ended December 31,

 

 

 

2019

 

 

2018

 

 

2017

 

 

 

(In thousands)

 

Supplemental investing activities:

 

 

 

 

 

 

 

 

 

 

 

 

Net unrealized gain (loss) on marketable securities

 

$

315

 

 

$

24

 

 

$

(154

)

Operating lease assets obtained in exchange for

   operating lease liabilities

 

 

2,473

 

 

 

 

 

 

 

 

We have not made any cash payments for taxes or interest for the years ended December 31, 2019, 2018 and 2017.