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Inventories

6 Months Ended

Jun. 30, 2011

Inventories

Note 5. Inventories

The components of inventories are as follows:

		June 30, 2011			December 31, 2010
		(in thousands)
Raw materials		$	83,430		$	74,596
Work in process		35,018			29,848
Finished goods (completed systems)		5,825			5,209
		$	124,273		$	109,653

When recorded, reserves reduce the carrying value of inventories to their net realizable value. The Company establishes inventory reserves when conditions exist that indicate inventories may be in excess of anticipated demand or is obsolete based upon assumptions about future demand for the Company’s products or market conditions. The Company regularly evaluates the ability to realize the value of inventories based on a combination of factors including forecasted sales or usage, estimated product end- of- life dates, estimated current and future market value and new product introductions. Purchasing and usage alternatives are also explored to mitigate inventory exposure. As of June 30, 2011 and December 31, 2010, inventory is stated net of inventory reserves of $27.7 million and $27.5 million, respectively.

The entire disclosure for inventory. This may include, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the major classes of inventory, and the nature of the cost elements included in inventory. If inventory is stated above cost, accrued net losses on firm purchase commitments for inventory and losses resulting from valuing inventory at the lower-of-cost-or-market may also be included. For LIFO inventory, may disclose the amount and basis for determining the excess of replacement or current cost over stated LIFO value and the effects of a LIFO quantities liquidation that impacts net income.

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