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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2011
Fair Value Disclosures [Abstract] 
Assets and liabilities measured at fair value on a recurring basis
 
September 30, 2011
 
December 31, 2010
 
Total
 
Level 1
 
Level 2
 
Level 3
 
Total
 
Level 1
 
Level 2
 
Level 3
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cash equivalents
$
11,267

 
$
—

 
$
11,267

 
$
—

 
$
243,514

 
$
230,000

 
$
13,514

 
$
—

Foreign currency forward contracts
149

 
—

 
149

 
—

 
1,763

 
—

 
1,763

 
—

Total
$
11,416

 
$
—

 
$
11,416

 
$
—

 
$
245,277

 
$
230,000

 
$
15,277

 
$
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Liabilities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Interest rate swap agreement
$
9,455

 
$
—

 
$
9,455

 
$
—

 
$
5,842

 
$
—

 
$
5,842

 
$
—

Foreign currency forward contracts
1,152

 
—

 
1,152

 
—

 
305

 
—

 
305

 
—

Total
$
10,607

 
$
—

 
$
10,607

 
$
—

 
$
6,147

 
$
—

 
$
6,147

 
$
—