Note 7 - Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	May 31, 2015	Dec. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Goodwill, Acquired During Period	$ 14,900			$ 14,887
Amortization of Intangible Assets			3,068	5,555	$ 5,978
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months			2,400
Finite-Lived Intangible Assets, Amortization Expense, Year Two			596
Goodwill, Impaired, Accumulated Impairment Loss			13,192	13,192
Impairment of Intangible Assets, Finite-lived		$ 1,400	$ 1,391