NOTE 6SUPPLEMENTAL BALANCE SHEET INFORMATION

Inventories

Inventories that are expected to be sold within one year are classified as current inventories and are included in inventories in the accompanying consolidated balance sheets. Such inventories were as follows:

(In thousands)	September 27,		December 28,
	2014		2013
Raw materials and purchased parts	$	66,635	$	61,819
Work in process	19,176		19,577
Finished goods	26,842		21,987
Short-term inventories	$	112,653	$	103,383

Inventories that are not expected to be sold within one year are classified as long-term inventories and are included in investments and other assets in the accompanying consolidated balance sheets. Such inventories were as follows:

(In thousands)	September 27,		December 28,
	2014		2013
Raw materials and purchased parts	$	2,057	$	1,850
Finished goods	3,198		4,489
Long-term inventories	$	5,255	$	6,339

Accrued Warranty Obligations

Unless otherwise stated in the Company’s product literature or in its agreements with customers, products sold by the Company’s Photonics and Optics Groups generally carry a one-year warranty from the original invoice date on all product materials and workmanship, other than filters and gratings products, which generally carry a 90-day warranty, and laser beam profilers and dental CAD/CAM scanners, which generally carry a two-year warranty. Products sold by the Photonics and Optics Groups to original equipment manufacturer (OEM) customers carry warranties generally ranging from 15 to 19 months. Products sold by the Company’s Lasers Group carry warranties that vary by product and product component, but generally range from 90 days to two years. In certain cases, such warranties for Lasers Group products are limited by either a set time period or a maximum amount of hourly usage of the product, whichever occurs first. Defective products will be either repaired or replaced, generally at the Company’s option, upon meeting certain criteria. The Company accrues a provision for the estimated costs that may be incurred for warranties relating to a product (based on historical experience) as a component of cost of sales. Short-term accrued warranty obligations, which expire within one year, are included in accrued expenses and other current liabilities and long-term warranty obligations are included in deferred income taxes and other liabilities in the accompanying consolidated balance sheets.

The activity in accrued warranty obligations was as follows:

	Nine Months Ended
(In thousands)	September 27,		September 28,
	2014		2013
Balance at beginning of year	$	3,285	$	3,528
Additions charged to cost of sales	2,134		1,817
Warranty claims	(2,487)		(2,112)
Balance at end of period	$	2,932	$	3,233

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities were as follows:

(In thousands)	September 27,		December 28,
	2014		2013
Deferred revenue	$	13,059	$	13,609
Deferred lease liability	5,165		5,448
Accrued and deferred taxes	4,144		3,130
Short-term accrued warranty obligations	2,760		3,093
Other	8,910		10,061
	$	34,038	$	35,341

Accumulated Other Comprehensive Loss

Accumulated other comprehensive loss consisted of the following:

(In thousands)	September 27,		December 28,
	2014		2013
Cumulative foreign currency translation losses	$	(9,870)	$	(2,296)
Unrecognized net pension losses, net of tax	(2,093)		(2,399)
Unrealized gains on marketable securities, net of tax	899		1,076
	$	(11,064)	$	(3,619)