Quarterly report pursuant to Section 13 or 15(d)

Income (Loss) Per Share (Details)

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Income (Loss) Per Share (Details)
3 Months Ended 9 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Oct. 31, 2012
Oct. 31, 2011
Weighted average shares used in calculating earnings per share - Basic (in shares) 32,474 32,132 32,554 32,055
Dilutive common stock equivalents (in shares) 539 685 0 651
Weighted average shares used in calculating earnings per share - Diluted (in shares) 33,013 32,817 32,554 32,706