Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 29, 2018	Dec. 30, 2017
Segment Reporting Information [Line Items]
Net External Sales	$ 171,453	$ 166,858	$ 520,354	$ 495,072
Gross Margin	68,127	64,772	203,685	188,706
Selling, General & Administrative Expenses	29,142	28,162	88,043	83,535
Operating Income	19,838	33,282	91,720	90,678
Intersegment Sales	14,911	13,069	45,998	39,088
Plain [Member]
Segment Reporting Information [Line Items]
Net External Sales	79,306	69,764	235,311	214,809
Gross Margin	31,921	26,689	93,404	82,941
Selling, General & Administrative Expenses	6,475	6,371	18,997	19,143
Operating Income	25,044	19,208	72,443	61,179
Intersegment Sales	1,285	1,240	4,525	3,793
Roller [Member]
Segment Reporting Information [Line Items]
Net External Sales	34,841	32,485	107,711	96,215
Gross Margin	14,631	14,458	45,858	40,176
Selling, General & Administrative Expenses	1,559	1,553	4,739	4,765
Operating Income	13,049	12,905	41,083	35,390
Intersegment Sales	3,602	3,438	10,771	9,731
Ball [Member]
Segment Reporting Information [Line Items]
Net External Sales	16,720	16,496	52,832	48,756
Gross Margin	6,861	7,021	21,548	19,936
Selling, General & Administrative Expenses	1,656	1,707	4,867	5,002
Operating Income	5,164	5,237	16,532	14,752
Intersegment Sales	740	606	2,302	1,758
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Selling, General & Administrative Expenses	14,657	13,193	44,209	38,888
Operating Income	(15,337)	(12,885)	(46,653)	(38,482)
Engineered Products [Member]
Segment Reporting Information [Line Items]
Net External Sales	40,586	48,113	124,500	135,292
Gross Margin	14,714	16,604	42,875	45,653
Selling, General & Administrative Expenses	4,795	5,338	15,231	15,737
Operating Income	(8,082)	8,817	8,315	17,839
Intersegment Sales	$ 9,284	$ 7,785	$ 28,400	$ 23,806