Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2015
Fair Value Disclosures [Abstract]  
Levels of Inputs Used to Measure Fair Value of Assets
 
 
Quoted Prices in Active Markets for Identical Assets (Level 1)
 
Significant Other Observable Inputs (Level 2)
 
Significant Unobservable Inputs (Level 3)
 
Total
At December 31, 2015
 

 

 

 

U.S. non-qualified deferred compensation plan
 
$
14,145

 
$
—

 
$
—

 
$
14,145

Assets designated for retirement and pension plans
 
—

 
18,164

 
—

 
18,164

Acquisition earnout accruals
 
—

 
—

 
(12,033
)
 
(12,033
)
 
 
$
14,145

 
$
18,164

 
$
(12,033
)
 
$
20,276

 
 
 
Quoted Prices in Active Markets for Identical Assets (Level 1)
 
Significant Other Observable Inputs (Level 2)
 
Significant Unobservable Inputs (Level 3)
 
Total
At December 31, 2014
 

 

 

 

U.S. non-qualified deferred compensation plan
 
$
13,709

 
$
—

 
$
—

 
$
13,709

Assets designated for retirement and pension plans
 
—

 
20,880

 
—

 
20,880

Derivatives designated as cash flow hedge
 
—

 
125

 
—

 
125

Acquisition earnout accruals
 
—

 
—

 
(12,944
)
 
(12,944
)

 
$
13,709

 
$
21,005

 
$
(12,944
)
 
$
21,770
Reconciliation of Beginning and Ending Balance of Level 3 Assets and Liabilities
The following table provides a reconciliation of the beginning and ending balance of Level 3 assets and liabilities for the year ended December 31, 2015.
 
 
 
Acquisition
Earnout
Accruals
Balance at December 31, 2014
 
 
$
(12,944
)
Unrealized losses
 
 
—

Acquisition earnout (Note 8)
 
 
(4,231
)
Earnout accretion
 
 
(1,294
)
Earnout payments
 
 
5,496

Foreign currency translation
 
 
276

Other
 
 
664

Balance at December 31, 2015
 
 
$
(12,033
)