Consolidated Balance Sheets (Parentheticals) - $ / shares shares in Thousands	Dec. 31, 2016	Mar. 31, 2016
Statement of Financial Position [Abstract]
Preferred stock, no par value (in dollars per share)	$ 0.00	$ 0.00
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued	0	0
Common stock, no par value (in dollars per share)	$ 0.00	$ 0.00
Common stock, shares authorized	50,000	50,000
Common stock, shares issued	12,492	12,466
Common stock, shares outstanding	7,778	7,752
Treasury stock, shares	4,714	4,714