Description of Business and Summary of Significant Accounting Policies - Change in Carrying Value of Goodwill (Details) - USD ($)	12 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 29, 2020
Goodwill [Line Items]
Goodwill	$ 58,311,000	$ 55,000,000	$ 54,785,000
Goodwill, Acquired During Period	18,160,000	3,290,000	215,000
Goodwill, Impairment Loss	0	0	0
Adjustments to goodwill acquired, net	(1,353,000)	21,000	0
Foreign currency translation	(798,000)	0	0
Goodwill	74,320,000	58,311,000	55,000,000
Goodwill, Gross	106,483,000	90,474,000	87,163,000
Goodwill, Impaired, Accumulated Impairment Loss	(32,163,000)	(32,163,000)	(32,163,000)
Automotive Electronics [Member]
Goodwill [Line Items]
Goodwill	11,778,000	8,467,000	8,252,000
Goodwill, Acquired During Period	0	3,290,000	215,000
Adjustments to goodwill acquired, net	(1,353,000)	21,000	0
Goodwill	10,425,000	11,778,000	8,467,000
Goodwill, Gross	10,425,000	11,778,000	8,467,000
Goodwill, Impaired, Accumulated Impairment Loss	0	0	0
Consumer Electronics [Member]
Goodwill [Line Items]
Goodwill	46,533,000	46,533,000	46,533,000
Goodwill, Acquired During Period	18,160,000	0	0
Adjustments to goodwill acquired, net	0	0	0
Foreign currency translation	(798,000)	0	0
Goodwill	63,895,000	46,533,000	46,533,000
Goodwill, Gross	96,058,000	78,696,000	78,696,000
Goodwill, Impaired, Accumulated Impairment Loss	$ (32,163,000)	$ (32,163,000)	$ (32,163,000)