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Accounts payable and accrued expenses
9 Months Ended
Sep. 28, 2013
Payables and Accruals [Abstract]  
Accounts payable and accrued expenses
Accounts payable and accrued expenses

Accounts payable and accrued expenses are as follows:
 
September 28,
2013
 
December 31,
2012
Outstanding checks in excess of cash
$
18,476

 
25,480

Accounts payable, trade
727,770

 
387,871

Accrued expenses
271,382

 
180,039

Product warranties
33,567

 
32,930

Accrued interest
15,550

 
26,843

Deferred tax liability
14,564

 
6,309

Income taxes payable
11,212

 
2,074

Accrued compensation and benefits
203,671

 
111,890

Total accounts payable and accrued expenses
$
1,296,192

 
773,436