Allowance for Doubtful Accounts

12 Months Ended

Dec. 31, 2015

Allowance for Doubtful Accounts

3. ALLOWANCE FOR DOUBTFUL ACCOUNTS

Activity in the allowance for doubtful accounts was as follows:

	Years ended December 31,
	2015			2014			2013
Balance, beginning of year	$	1,844		$	3,686		$	3,780
Provision (net of recovery)		346			(306	)		1,001
Amounts written off, net of recoveries		(773	)		(1,536	)		(1,095	)
Balance, end of year	$	1,417		$	1,844		$	3,686