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Financial Instruments Measured at Fair Value (Tables)
 12 Months Ended
Dec. 31, 2013
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
The following table presents assets (liabilities) measured at fair value on a recurring basis at December 31, 2013:

 
 
Level 1
 
Level 2
 
Level 3
 
Total
Available-for-sale securities
 
$
69,857

 
$
—

 
$
—

 
$
69,857

Foreign exchange contracts
 
—

 
(654
)
 
—

 
(654
)
Contingent consideration
 
—

 
—

 
(5,845
)
 
(5,845
)
 
 
$
69,857

 
$
(654
)
 
$
(5,845
)
 
$
63,358


The following table presents assets (liabilities) measured at fair value on a recurring basis at December 31, 2012:

 
 
Level 1
 
Level 2
 
Level 3
 
Total
Available-for-sale securities
 
$
67,903

 
$
—

 
$
—

 
$
67,903

Interest rate swaps
 
—

 
(10,832
)
 
—

 
(10,832
)
Foreign exchange contracts
 
—

 
(107
)
 
—

 
(107
)
Contingent consideration
 
—

 
—

 
(806
)
 
(806
)
 
 
$
67,903

 
$
(10,939
)
 
$
(806
)
 
$
56,158
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
The following table summarizes the Level 3 activity for the year ended December 31, 2013:

Balance as of December 31, 2012
$
(806
)
Fair value of initial contingent consideration
(4,521
)
Change in fair value of contingent consideration included in earnings
(518
)
Balance as of December 31, 2013
$
(5,845
)
Available-for-sale Securities [Text Block]
The fair value of the company's available-for-sale securities is as follows at December 31:

 
 
2013
  
 
Marubun
 
WPG
 
Mutual Funds
Cost basis
 
$
10,016

 
$
10,798

 
$
15,614

Unrealized holding gain
 
2,709

 
24,903

 
5,817

Fair value
 
$
12,725

 
$
35,701

 
$
21,431

 
 
 
 
 
 
 
 
 
2012
 
 
Marubun
 
WPG
 
Mutual Funds
Cost basis
 
$
10,016

 
$
10,798

 
$
15,271

Unrealized holding gain
 
85

 
29,784

 
1,949

Fair value
 
$
10,101

 
$
40,582

 
$
17,220
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Text Block]
The fair values of derivative instruments in the consolidated balance sheets are as follows at December 31:

 
 
Asset (Liability) Derivatives
  
 
  
 
Fair Value
  
 
Balance Sheet
Location
 
2013
 
2012
Derivative instruments designated as hedges:
 
 
 
 
 
 
Interest rate swaps designated as cash flow hedges
 
Accrued expenses
 
$
—

 
$
(10,832
)
Foreign exchange contracts designated as cash flow hedges
 
Other current assets
 
368

 
433

Foreign exchange contracts designated as cash flow hedges
 
Accrued expenses
 
(203
)
 
(45
)
Total derivative instruments designated as hedging instruments
 
 
 
165

 
(10,444
)
Derivative instruments not designated as hedges:
 
 
 
 

 
 

Foreign exchange contracts
 
Other current assets
 
1,275

 
1,561

Foreign exchange contracts
 
Accrued expenses
 
(2,094
)
 
(2,056
)
Total derivative instruments not designated as hedging instruments
 
 
 
(819
)
 
(495
)
Total
 
 
 
$
(654
)
 
$
(10,939
)
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Text Block]
The effect of derivative instruments on the consolidated statements of operations is as follows for the years ended December 31:

 
 
Gain (Loss) Recognized in Income
  
 
2013
 
2012
 
2011
Derivative instruments not designated as hedges:
 
 
 
 
 
 
Foreign exchange contracts (a)
 
$
(144
)
 
$
(3,777
)
 
$
(3,633
)

 
 
Cash Flow Hedges
 
 
Interest Rate Swaps (b)
 
Foreign Exchange Contracts (c)
2013
 
 
 
 
Effective portion:
 
 
 
 
  Gain (loss) recognized in other comprehensive income
 
$
3,132

 
$
(243
)
  Gain (loss) reclassified into income
 
$
(537
)
 
$
439

Ineffective portion:
 
 
 
 
  Gain (loss) recognized in income
 
$
292

 
$
—

 
 
 
 
 
2012
 
 
 
 
Effective portion:
 
 
 
 
  Gain (loss) recognized in other comprehensive income
 
$
(7,823
)
 
$
1,012

  Gain (loss) reclassified into income
 
$
—

 
$
(54
)
Ineffective portion:
 
 
 
 
  Gain (loss) recognized in income
 
$
—

 
$
—

 
 
 
 
 
2011
 
 
 
 
Effective portion:
 
 
 
 
  Gain (loss) recognized in other comprehensive income
 
$
(3,009
)
 
$
(711
)
  Gain (loss) reclassified into income
 
$
—

 
$
53

Ineffective portion:
 
 
 
 
  Gain (loss) recognized in income
 
$
—

 
$
—



(a)
The amount of gain (loss) recognized in income on derivatives is recorded in "Cost of sales" in the company's consolidated statements of operations.
(b)
Both the effective and ineffective portions of any gain (loss) reclassified or recognized in income are recorded in "Interest and other financing expense, net" in the company's consolidated statements of operations.
(c)
Both the effective and ineffective portions of any gain (loss) reclassified or recognized in income are recorded in "Cost of sales" in the company's consolidated statements of operations.