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Accounts Receivable, Net and Supplemental Balance-Sheet Information (Tables)
6 Months Ended
Jun. 29, 2013
Accounts Receivable, Net and Supplemental Balance Sheet Information [Abstract]  
Schedule of accounts receivable, net [Table Text Block]
The following comprise accounts receivable, net, and other:
Accounts receivable, net
June 29,
2013
 
December 31,
2012
Accounts receivable
$
87,397

 
$
105,044

Receivables under contractual arrangements
23,670

 
12,961

 
111,067

 
118,005

 
 
 
 
Less allowances for doubtful accounts
1,896

 
2,442

 
 
 
 
Accounts receivable, net
$
109,171

 
$
115,563

Other liabilities, current [Table Text Block]
The following comprise the amounts included in the balance sheet:
Accrued expenses
June 29,
2013
 
December 31,
2012
Employee compensation
$
14,012

 
$
17,888

Accrued compensated absences
7,460

 
7,080

Self-insured medical claims
1,663

 
2,571

Income tax payable

 
2,013

Customer advances, deposits

 
1,346

Taxes, other than income
3,464

 
2,463

Other
1,863

 
1,101

Total
$
28,462

 
$
34,462