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Other Long-Term Liabilities (Tables)
 12 Months Ended
Dec. 31, 2015
Other Liabilities Disclosure [Abstract]  
Summary of Other- Long Term Liabilities
Other long-term liabilities consisted of the following (in thousands):
 
DECEMBER 31,
 
2015
 
2014
Deferred compensation plan (Note 11)
$
24,238

 
$
22,425

Supplemental executive retirement plan (Note 11)
11,337

 
10,197

Other
5,051

 
3,834

 
$
40,626

 
$
36,456