INVENTORIES

Inventories are stated at the lower of cost or market, with cost determined by standard cost methods, which approximate the first-in, first-out method. Inventory costs include material, labor and manufacturing overhead. Service inventories that exceed the estimated requirements for the next 12 months based on recent usage levels are reported as a long-term asset. Management has established inventory reserves based on estimates of excess and/or obsolete current and non-current inventory.

Inventories consisted of the following (in thousands):



	June 28, 2015		December 31, 2014
Raw materials and assembled parts	$	58,540	$	61,644
Service inventories, estimated current requirements	11,947		12,398
Work-in-process	86,275		76,402
Finished goods	24,897		25,996
Total current inventories	$	181,659	$	176,440
Non-current inventories	$	48,703	$	50,731