Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jul. 01, 2017
Segment Reporting Information [Line Items]
Net External Sales	$ 175,985	$ 163,897
Gross Margin	67,739	62,016
Selling, General & Administrative Expenses	29,575	27,778
Operating Income	35,998	31,959
Intersegment Sales	15,630	13,266
Plain [Member]
Segment Reporting Information [Line Items]
Net External Sales	78,525	72,653
Gross Margin	30,616	28,450
Selling, General & Administrative Expenses	6,362	6,449
Operating Income	21,687	21,235
Intersegment Sales	1,597	1,156
Roller [Member]
Segment Reporting Information [Line Items]
Net External Sales	35,870	31,413
Gross Margin	14,957	12,788
Selling, General & Administrative Expenses	1,624	1,571
Operating Income	13,332	11,216
Intersegment Sales	4,095	3,409
Ball [Member]
Segment Reporting Information [Line Items]
Net External Sales	18,074	15,780
Gross Margin	7,279	6,175
Selling, General & Administrative Expenses	1,602	1,615
Operating Income	5,618	4,495
Intersegment Sales	800	528
Engineered Products [Member]
Segment Reporting Information [Line Items]
Net External Sales	43,516	44,051
Gross Margin	14,887	14,603
Selling, General & Administrative Expenses	5,360	5,277
Operating Income	10,634	8,217
Intersegment Sales	9,138	8,173
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Selling, General & Administrative Expenses	14,627	12,866
Operating Income	$ (15,273)	$ (13,204)