Note 10 - Business Combinations - Assets Acquired and Liabilities Assumed by Worthington (Details) - USD ($)		12 Months Ended
	May 04, 2018	Mar. 31, 2019	Mar. 31, 2018
Consideration paid		$ 3,375,700	$ 2,400,000
Worthington Aviation Parts, Inc [Member]
Accounts receivable	$ 1,929,120
Inventories	4,564,437
Other current assets	149,792
Property and equipment	391,892
Other assets	189,607
Total assets	7,362,848
Accounts payable	1,289,150
Accrued expenses	175,222
Deferred tax liability	589,000
Total liabilities	2,053,372
Net assets acquired	5,309,476
Consideration paid	3,350,000
Less: Cash acquired	(24,301)
Bargain purchase gain	1,983,777
Worthington Aviation Parts, Inc [Member] | Trade Names [Member]
Intangible assets - tradename	$ 138,000