CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2013	Mar. 31, 2013
Stockholders' equity
Preferred stock par value	$ 1	$ 1
Preferred stock shares authorized	10,000,000	10,000,000
Preferred stock shares issued	0	0
Preferred stock shares outstanding	0	0
Common stock par value	$ 0.5	$ 0.5
Common stock shares authorized	40,000,000	40,000,000
Common stock shares issued	2,102,866	2,099,116
Common stock shares outstanding	2,036,866	2,035,949
Treasury stock, shares	66,000	63,167