Significant Accounting Policies Reconciliation of shares in EPS calculations (Details) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Basic EPS:
Weighted average number of shares of common stock outstanding and vested DSUs	11,733	11,197	10,962
Diluted EPS:
Effect of dilutive DSUs and stock options	0	0	0
Diluted EPS	11,733	11,197	10,962
Stock Options
Diluted EPS:
Total outstanding options not included in diluted EPS as they would be antidilutive	2,850	2,020	1,467
Performance Based Stock Options
Diluted EPS:
Total outstanding options not included in diluted EPS as they would be antidilutive	270	318	636