Net Loss per Common Share (Tables)

3 Months Ended

Jun. 30, 2012

Net Loss per Common Share [Abstract]

Anti-dilutive securities excluded from diluted loss per common share

Basic net loss per common share excludes dilution and is computed by dividing net loss applicable to common shareholders by the weighted average number of common shares outstanding during the three-month periods ended June 30, 2012 and 2011.  To calculate diluted per common share amounts, we add additional shares to the weighted-average common shares outstanding for the assumed exercise of stock options and vesting of restricted shares, if dilutive.  The following potentially dilutive options to purchase shares of common stock and unvested restricted stock at June 30, were excluded from diluted net loss per common share because of their anti-dilutive effect, and therefore, basic net loss per common share equals dilutive net loss per common share for all periods presented in our consolidated statements of operations:

	Number of options and unvested restricted stock		Range of stock option exercise prices
June 30, 2012		1,461,000	$	0.77 to $4.56
June 30, 2011		2,113,000	$	0.71 to $7.25