Business Segment Information - Summary of Segment Information (Details) $ in Thousands	3 Months Ended
Mar. 28, 2020 USD ($) Segment	Mar. 30, 2019 USD ($)
Segment Reporting [Abstract]
Number of reportable segments \| Segment	3
Revenue
Revenues	$ 159,127	$ 171,316
Income Before Provision for Income Taxes
Total operating income	19,655	18,575
Interest expense, net	(2,408)	(3,448)
Other expense, net	(32)	(99)
Income Before Provision for Income Taxes	17,215	15,028
Capital Expenditures
Capital expenditures	2,686	2,168
Operating Segment \| Flow Control
Revenue
Revenues	57,149	61,144
Income Before Provision for Income Taxes
Total operating income	13,330	12,984
Capital Expenditures
Capital expenditures	821	471
Operating Segment \| Industrial Processing
Revenue
Revenues	64,709	72,274
Income Before Provision for Income Taxes
Total operating income	9,436	11,854
Capital Expenditures
Capital expenditures	1,464	1,363
Operating Segment \| Material Handling Systems
Revenue
Revenues	37,269	37,898
Income Before Provision for Income Taxes
Total operating income	4,134	731
Capital Expenditures
Capital expenditures	398	333
Acquisition transaction costs		4,151
Corporate
Income Before Provision for Income Taxes
Total operating income	(7,245)	(6,994)
Capital Expenditures
Capital expenditures	$ 3	$ 1

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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