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Employee Benefit Plans (Tables)
12 Months Ended
Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]  
Schedule of Costs of 401(k) Plans
Company contributions to the 401(k) Plan were as follows:
 
Year ended December 31, 
 
 
2012
 
2011
 
2010
401(k) Plan contributions
$
5,214

 
$
4,953

 
$
4,053

Schedule of Deferred Compensation Plan
The liability for the deferred compensation and the value of the funds allocated to the trust by the Company are included in the Company's consolidated balance sheets as follows:
 
December 31, 2012
 
December 31, 2011
Other non-current assets, net:
 
 
 
Compensation plan funds
$
4,591

 
$
3,635

Other long-term liabilities:
 
 
 
Deferred compensation
$
4,591

 
$
3,635

German Pension
The pension plan obligation and the reinsurance program funds are included in the Company's consolidated balance sheets as follows:
 
December 31, 2012
 
December 31, 2011
Other non-current assets, net:
 
 
 
Reinsurance program funds
$
3,541

 
$
3,277

Other long-term liabilities:
 
 
 
Pension obligation
$
4,127

 
$
3,217