Shareholders' Equity - Non-Vested Restricted Stock Activity (Details) shares in Thousands	9 Months Ended
	Oct. 28, 2017 $ / 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	1,620
Granted, shares | shares	2,008
Vested, shares | shares	(339)
Forfeited, shares | shares	(367)
Non-vested restricted stock shares outstanding at end of period | shares	2,922
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	$ 2.00
Granted, weighted average grant date fair value per share | $ / shares	1.32
Vested, weighted average grant date fair value per share | $ / shares	1.94
Forfeited, weighted average grant date fair value per share | $ / shares	2.41
Non-vested restricted stock shares outstanding at end of period, weighted average grant date fair value per share | $ / shares	$ 1.49