Balance Sheet Details:

Inventories

Inventories are comprised of the following:



	December 31,
	2015		2014
Materials	$	39,022	$	29,092
Work-in-process	18,918		20,424
Finished goods	13,550		13,828
Total inventories	$	71,490	$	63,344

The Company has established reserves of $8,896 and $7,000 at December 31, 2015 and 2014, respectively, for slow moving and obsolete inventory. During 2015, the Company recorded a net charge in cost of revenues of $3,676 for the write-down of inventory for excess parts, for older product lines and for parts that were rendered obsolete by design and engineering advancements. In 2015, the Company disposed of $1,780 of inventory. During 2014, the Company recorded a net charge in cost of revenues of $3,910 for the write-down of inventory for excess parts, for older product lines and for parts that were rendered obsolete by design and engineering advancements. In 2014, the Company disposed of $3,011 of inventory.

Property, Plant and Equipment

Property, plant and equipment, net is comprised of the following:



	December 31,
	2015			2014
Land and building	$	5,024		$	5,024
Machinery and equipment	21,683			20,277
Furniture and fixtures	3,414			3,387
Computer equipment	5,304			5,819
Leasehold improvements	7,884			7,774
	43,309			42,281
Accumulated depreciation	(30,963		)	(29,343		)
Total property, plant and equipment, net	$	12,346		$	12,938

Depreciation expense amounted to $3,951, $4,686 and $4,150 for the years ended December 31, 2015, 2014 and 2013, respectively.

In February 2016, the Company consolidated its New Jersey locations into its Budd Lake, NJ facility and vacated its corporate offices in Flanders, NJ. The Flanders, NJ corporate office location will be considered a long-lived asset held for sale and the land and building have a carrying value of $231.

Other current liabilities

Other current liabilities is comprised of the following:



	December 31,
	2015		2014
Litigation accrual	$	3,252	$	3,252
Contingent consideration - acquisitions	1,407		1,267
Other	7,756		5,624
Total other current liabilities	$	12,415	$	10,143

Other non-current liabilities

Other non-current liabilities is comprised of the following:



	December 31,
	2015		2014
Unrecognized tax benefits (including interest)	$	3,152	$	3,178
Contingent consideration - acquisitions	2,296		3,797
Deferred revenue	1,206		931
Other	2,900		1,695
Total non-current liabilities	$	9,554	$	9,601