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Supplemental Cash Flow Information
 6 Months Ended
Jun. 30, 2019
Supplemental Cash Flow Elements [Abstract]  
Supplemental Cash Flow Information Supplemental Cash Flow Information
 
 
Three months ended

Six months ended
 
June 30,
2019

June 30,
2018

June 30,
2019

June 30,
2018
Supplemental disclosures:
(in thousands)
Interest paid
$
—


$
—


$
—


$
5

Income taxes paid
$
41


$
451


$
394


$
6,683

Non-cash investing and financing activities:
 


 







Non-cash capital expenditures
$
(1,232
)

$
(1,604
)

$
(164
)

$
(871
)
Dividends declared
8,355

 
$
8,400

 
$
8,355

 
$
8,400