Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Jun. 29, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Revenue, Net	$ 98,036	$ 94,744
Gross profit	18,496	17,231
Selling, General and Administrative Expense	8,875	8,970
Operating income	9,621	8,261
Industrial [Member]
Segment Reporting Information [Line Items]
Revenue, Net	67,546	67,031
Gross profit	9,361	9,222
Selling, General and Administrative Expense	5,099	5,434
Operating income	4,262	3,788
Water Treatment [Member]
Segment Reporting Information [Line Items]
Revenue, Net	30,490	27,713
Gross profit	9,135	8,009
Selling, General and Administrative Expense	3,776	3,536
Operating income	$ 5,359	$ 4,473

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

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

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.

+ References

+ Details

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- Details

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.4)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 4

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 330

-SubTopic 10

-Section 30

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34747878&loc=d3e3636-108311

+ Details

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