Business Segment Information - Summary of Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021 USD ($)	Jun. 27, 2020 USD ($)	Jul. 03, 2021 USD ($) Segment	Jun. 27, 2020 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | Segment			3
Revenue
Revenues	$ 195,811	$ 152,860	$ 368,274	$ 311,987
Income Before Provision for Income Taxes
Total operating income	33,010	18,121	56,437	37,776
Interest expense, net	(1,010)	(1,894)	(2,056)	(4,302)
Other expense, net	(24)	(31)	(48)	(63)
Income Before Provision for Income Taxes	31,976	16,196	54,333	33,411
Capital Expenditures
Capital expenditures	2,059	911	4,318	3,597
Restructuring costs	0	456	0	456
Flow Control
Capital Expenditures
Acquisition transaction costs	239		1,236
Restructuring costs		456		456
Industrial Processing
Capital Expenditures
Acquisition transaction costs		435		435
Operating Segment | Flow Control
Revenue
Revenues	70,762	51,365	134,516	108,514
Income Before Provision for Income Taxes
Total operating income	19,324	10,260	34,770	23,590
Capital Expenditures
Capital expenditures	368	337	702	1,158
Operating Segment | Industrial Processing
Revenue
Revenues	82,681	65,673	151,835	130,382
Income Before Provision for Income Taxes
Total operating income	17,301	10,639	28,434	20,075
Capital Expenditures
Capital expenditures	1,191	211	2,995	1,675
Operating Segment | Material Handling
Revenue
Revenues	42,368	35,822	81,923	73,091
Income Before Provision for Income Taxes
Total operating income	5,592	3,593	10,035	7,727
Capital Expenditures
Capital expenditures	495	283	616	681
Corporate
Income Before Provision for Income Taxes
Total operating income	(9,207)	(6,371)	(16,802)	(13,616)
Capital Expenditures
Capital expenditures	$ 5	$ 80	$ 5	$ 83