Unaudited Condensed Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2015	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)	31,542,215	31,674,782
Treasury stock, shares (in shares)	6,671,943	6,442,102