Restructuring and Other

During the years ended December 31, 2018, 2017, and 2016, we continued to analyze and re-align our cost structure following our business acquisitions. These charges primarily relate to integrating recently acquired businesses, consolidating facilities, eliminating redundancies, and lowering our operating expense run rate. Restructuring and other consists primarily of restructuring, severance, short-term retention costs, facility downsizing and relocation, and acquisition integration expenses. Our restructuring and other plans are accounted for in accordance with ASC 420, ASC 712, and ASC 820.

Restructuring and other costs for the years ended December 31, 2018, 2017, and 2016 were $13.6, $7.6, and $6.7 million, respectively. Restructuring and other costs included severance costs of $7.5, $4.7, and $4.1 million related to head count reductions of 148, 144, and 128 for the years ended December 31, 2018, 2017, and 2016, respectively. Severance costs include severance payments, related employee benefits, outplacement fees, recruiting, and employee relocation costs.

Facilities relocation and downsizing expenses for the years ended December 31, 2018, 2017, and 2016 were $1.7, $0.6, and $0.5 million, respectively. Facilities restructuring and other expenses are primarily related to the relocation of certain manufacturing and administrative locations to consolidate, streamline, or improve operations. Integration expenses for the years ended December 31, 2018, 2017, and 2016 of $4.3, $2.3, and $2.1 million, respectively, represented costs to integrate our business acquisitions.

Restructuring and other reserve activities are summarized as follows (in thousands):



	Year Ended December 31,
	2018			2017
Reserve balance at January 1	$	2,452		$	1,824
Restructuring charges	8,323			5,136
Other charges	5,259			2,424
Non-cash restructuring and other	(975		)	(264		)
Cash payments	(13,088		)	(6,668		)
Reserve balance at December 31	$	1,971		$	2,452