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Business Segments (Schedule of Information on Company's Business Segments) (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Segment Reporting Information [Line Items] |  |  |
Net sales | $ 553,552 | $ 502,572 |
Operating income | 115,671 | 103,345 |
Interest expense | 11,552 | 10,489 |
Other (income) expense - net | (308) | 44 |
Income before income taxes | 104,427 | 92,812 |
Total assets | 3,163,785 |  | $ 3,154,944
Benefit from reversal of contingent consideration |  | 3,700 |
Intersegment elimination |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | (344) | (232) |
Corporate office expense and other |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating income | (17,006) | (14,694) |
Total assets | 93,444 |  | 117,503
Fluid & Metering Technologies |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 216,655 | 211,709 |
Operating income | 57,813 | 51,703 |
Fluid & Metering Technologies | Intersegment elimination |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 115 | 134 |
Fluid & Metering Technologies | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 216,770 | 211,843 |
Total assets | 1,079,230 |  | 1,065,670
Health & Science Technologies |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 199,575 | 186,251 |
Operating income | 42,238 | 40,682 |
Health & Science Technologies | Intersegment elimination |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 104 | 92 |
Health & Science Technologies | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 199,679 | 186,343 |
Total assets | 1,281,976 |  | 1,266,036
Fire & Safety/Diversified Products |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 137,322 | 104,612 |
Operating income | 32,626 | 25,654 |
Fire & Safety/Diversified Products | Intersegment elimination |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 125 | 6 |
Fire & Safety/Diversified Products | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 137,447 | $ 104,618 |
Total assets | $ 709,135 |  | $ 705,735

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