Allowance for Doubtful Accounts

12 Months Ended

Dec. 31, 2016

Receivables [Abstract]

Allowance for Doubtful Accounts

5. ALLOWANCE FOR DOUBTFUL ACCOUNTS

A summary of the activity in the allowance for doubtful accounts for the last three fiscal years is as follows (in thousands):

	2016			2015			2014
Balance at beginning of year	$	22,623		$	24,989		$	25,151
Charged to costs and expenses		11,112			12,103			18,559
Customer accounts written off—net of recoveries		(8,347	)		(14,469	)		(18,721	)
Balance at end of year	$	25,388		$	22,623		$	24,989

This table excludes the vendor receivable related allowance for doubtful accounts of $2 million at December 31, 2016 and January 2, 2016, and $3 million at December 27, 2014.