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Fair Value Measurements (Tables)
 3 Months Ended
Mar. 31, 2018
Fair Value Disclosures [Abstract]  
Schedule Of Fair Value Of Assets
As of March 31, 2018 and December 31, 2017, the Company had the following assets measured at fair value on a recurring basis:
 
Fair Value Measurements at
Reporting Date Using
 
Total
 
Level 1
 
Level 2
 
Level 3
Assets
(in thousands)
As of March 31, 2018
 
 
 
 
 
 
 
Mutual funds(1)
$
21,388

 
$
21,388

 
$
—

 
$
—

Money market funds(1)
1,703

 
—

 
1,703

 
—

 
$
23,091

 
$
21,388

 
$
1,703

 
$
—

As of December 31, 2017
 
 
 
 
 
 
 
Money market funds, included in cash and cash equivalents
$
50,419

 
$
—

 
$
50,419

 
$
—

Mutual funds(1)
20,869

 
20,869

 
—

 
—

Money market funds(1)
1,702

 
—

 
1,702

 
—

 
$
72,990

 
$
20,869

 
$
52,121

 
$
—

________________________ 
(1)
Included in Investments, employee benefit plans at fair value and other current assets on the consolidated balance sheets.