Note 11 - Operating Lease Commitments (Details Textual)		3 Months Ended		9 Months Ended
	Apr. 07, 2016 USD ($) ft²	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Operating Leases, Rent Expense		$ 100,000	$ 200,000	$ 500,000	$ 600,000
Carmel, Indiana Office Space [Member] | Atapco Carmel, Inc. [Member]
Area of Real Estate Property | ft²	8,795
Lessee Leasing Arrangements, Operating Leases, Term of Contract	4 years 90 days
Lessee Leasing Arrangements, Operating Leases, Monthly Rental Payments	$ 11,727