Net Loss Per Share Reconciliation of the shares used for the basic loss per share (“EPS”) and diluted EPS calculations (Details)	3 Months Ended				6 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Basic EPS:
Weighted average number of shares of common stock outstanding and vested deferred stock units (“DSUs”)	12,104,000	[1]	11,669,000	[1]	12,083,000	[1]	11,451,000	[1]
Diluted EPS:
Effect of dilutive stock options and unvested DSUs	0		0		0		0
Total diluted EPS	12,104,000		11,669,000		12,083,000		11,451,000
Stock Options [Member]
Diluted EPS:
Total outstanding options not included in diluted EPS as they would be antidilutive	2,858,000		2,885,000		2,858,000		2,885,000
Performance Shares [Member]
Diluted EPS:
Performance and market-based grants not included in diluted EPS	239,000		270,000		239,000		270,000
Deferred Stock Unit (DSU) [Member]
Diluted EPS:
Vested stock units	178,302		139,436		174,228		132,442

[1] Includes 178,302 and 139,436 vested cumulative DSUs, respectively, for the three months ended September 30, 2013 and 2012 and 174,228 and 132,442 vested cumulative DSUs, respectively, for the six months ended September 30, 2013 and 2012, in each case, that will not be issued until the directors holding the DSUs retire from our Board of Directors.