Consolidated Balance Sheets (Parentheticals) - $ / shares	Mar. 31, 2016	Mar. 31, 2015
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	80,000,000	80,000,000
Common stock, shares issued (in shares)	38,214,158	38,116,884
Common stock, shares outstanding (in shares)	31,375,524	31,674,782
Treasury stock, shares (in shares)	6,838,634	6,442,102