Statement of Earnings (USD $) In Thousands, except Per Share data	3 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Income Statement Abstract
Net revenues	$ 101,778	$ 84,875
Cost of goods sold	66,743	55,382
Gross profit	35,035	29,493
Operating expenses:
Research, development and engineering	6,933	7,012
Selling, general and administrative	11,129	10,422
Amortization of acquisition-related intangible assets	642	1,923
Restructuring charges	0	47
Total operating expenses	18,704	19,404
Operating income (loss)	16,331	10,089
Other income (expense):
Interest income	69	73
Interest expense	(284)	(420)
Other (expense), net	(394)	2,780
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest	15,722	12,522
Benefit from income tax	(5,746)	(5,996)
Net income (loss)	$ 9,976	$ 6,526
Net income (loss) per share
Basic	$ 0.32	$ 0.21
Diluted	$ 0.30	$ 0.21
Weighted average shares used in per share calculation
WeightedAverageNumberOfSharesOutstandingBasic	31,508	31,332
WeightedAverageNumberOfDilutedSharesOutstanding	32,806	31,701

This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by (used in) operations using the indirect method.

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The aggregate cost of goods produced and sold and services rendered during the reporting period.

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The amount of net income or loss for the period per each share of common stock outstanding during the reporting period.

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The amount of net income or loss for the period per each share of common stock and dilutive common stock equivalents outstanding during the reporting period.

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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The sum of the current income tax expense (benefit) and the deferred income tax expense (benefit) pertaining to continuing operations.

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The cost of borrowed funds accounted for as interest that was charged against earnings during the period.

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Income derived from investments in debt securities and on cash and cash equivalents the earnings of which reflect the time value of money or transactions in which the payments are for the use or forbearance of money.

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The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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The net result for the period of deducting operating expenses from operating revenues.

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The net amount of other nonoperating income and expense, which does not qualify for separate disclosure on the income statement under materiality guidelines.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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The aggregate amount provided for estimated restructuring charges, remediation costs, and asset impairment loss during an accounting period. Generally, these items are either unusual or infrequent, but not both (in which case they would be extraordinary items).

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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The average number of shares issued and outstanding that are used in calculating diluted EPS, determined based on the timing of issuance of shares in the period.

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Number of [basic] shares, after adjustment for contingently issuable shares and other shares not deemed outstanding, determined by relating the portion of time within a reporting period that common shares have been outstanding to the total time in that period.

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