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Debt (Tables)
 12 Months Ended
Dec. 31, 2019
Long-term Debt, Unclassified [Abstract]  
Schedule of Cash Paid for Interest
Total cash paid for interest in the years ended December 31 was (in thousands):
 
2019
 
2018
 
2017
Interest expense, net
$
2,205

 
$
12,064

 
$
14,032

Interest income
764

 
2,156

 
574

Other non-cash adjustments
$
(380
)
 
$
(529
)
 
$
(647
)
Cash paid for interest
$
2,589

 
$
13,691

 
$
13,959