Note 12 - Equipment Leased to Customers (Tables)

12 Months Ended

Mar. 31, 2016

Notes Tables

Schedule of Future Minimum Rental Receivables from Leased Asset [Table Text Block]

Year ended March 31,
2017	$	206,000
2018		46,040
2019		46,040
2020		46,040
2021		46,040
Thereafter		3,837
Total minimum lease payments	$	393,994

Year ended March 31,
2017	$	240,000
2018		240,000
2019		40,000
	$	520,000