Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Mar. 31, 2014
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 838	$ 1,101
Common stock, stated value	$ 0.30	$ 0.30
Common stock, shares authorized	80,000,000	80,000,000
Common stock, shares issued	31,606,831	31,606,831
Common stock, shares outstanding	22,814,241	22,467,970
Treasury shares	8,792,590	9,138,861