Shareholders' Equity Shareholders' Equity - Non-Vested Restricted Stock Activity (Details)	9 Months Ended
	Oct. 29, 2016 $ / shares shares
Summary of changes in Company's non-vested restricted stock during period [Roll Forward]
Non-vested restricted stock shares outstanding at beginning of period | shares	861,000
Granted, shares | shares	1,516,000
Vested, shares | shares	(391,000)
Forfeited, shares | shares	(335,000)
Non-vested restricted stock shares outstanding at end of period | shares	1,651,000
Summary of changes in Company's non-vested restricted stock during period, weighted average grant date fair value [Roll Forward]
Non-vested restricted stock shares outstanding at beginning of period, weighted average grant date fair value per share | $ / shares	$ 4.46
Granted, weighted average grant date fair value per share | $ / shares	1.50
Vested, weighted average grant date fair value per share | $ / shares	2.43
Forfeited, weighted average grant date fair value per share | $ / shares	5.00
Non-vested restricted stock shares outstanding at end of period, weighted average grant date fair value per share | $ / shares	$ 2.11