RECEIVABLES

The following table provides a reconciliation of the activity related to the Company’s allowance for doubtful accounts receivable, for the years ended December 31:



(In thousands)	2016			2015			2014
Balance at beginning of period	$	844		$	917		$	705
Provision for doubtful accounts	(83		)	(5		)	178
Additions related to acquired businesses	29			33			58
Recoveries	—			8			4
Accounts written off	(135		)	(109		)	(28		)
Balance at end of period	$	655		$	844		$	917

In addition to the allowance for doubtful accounts receivable, the Company had an allowance for prompt payment discounts in the amount of $0.5 million and $0.4 million at December 31, 2016 and 2015, respectively.