Note 13 - Preferred Stock and Warrants (Tables)

3 Months Ended

Jun. 30, 2018

Notes Tables

Schedule of Stock by Class [Table Text Block]

Preferred Stock
	Shares		Shares		Shares		Liquidation Preference
	Designated		Issued		Outstanding		(in thousands)
Series B		10,000.00		9,997.00		9,997.00	$	2,309
Series C		3,500.00		3,424.65		3,424.65		500
Series D		6,000.00		5,111.86		5,111.86		731
Series E		60,000.00		43,800.00		43,800.00		1,643
Total at March 31, 2018		79,500.00		62,333.51		62,333.51	$	5,183
Series E				9,600.00		9,600.00		360
Total at June 30, 2018		79,500.00		71,933.51		71,933.51	$	5,413