Shareholders' Equity - Stock Option Awards - Stock Option Activity (Details) shares in Thousands	9 Months Ended
	Oct. 28, 2017 $ / shares shares
2011 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Balance outstanding at beginning of period | shares	2,543
Granted | shares	1,627
Exercised | shares	(52)
Forfeited or canceled | shares	(636)
Balance outstanding at end of period | shares	3,482
Options exercisable | shares	879
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Balance outstanding at beginning of period, weighted average exercise price | $ / shares	$ 2.19
Granted, weighted average exercise price | $ / shares	1.31
Exercised, weighted average exercise price | $ / shares	0.99
Forfeited or canceled, weighted average exercise price | $ / shares	3.05
Balance outstanding at end of period, weighted average exercise price | $ / shares	1.64
Options exercisable, weighted average exercise price | $ / shares	$ 2.26
2004 Omnibus Incentive Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Balance outstanding at beginning of period | shares	301
Granted | shares	0
Exercised | shares	0
Forfeited or canceled | shares	(14)
Balance outstanding at end of period | shares	287
Options exercisable | shares	287
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Balance outstanding at beginning of period, weighted average exercise price | $ / shares	$ 5.41
Granted, weighted average exercise price | $ / shares	0.00
Exercised, weighted average exercise price | $ / shares	0.00
Forfeited or canceled, weighted average exercise price | $ / shares	4.88
Balance outstanding at end of period, weighted average exercise price | $ / shares	5.44
Options exercisable, weighted average exercise price | $ / shares	$ 5.44
2001 Omnibus Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Balance outstanding at beginning of period | shares	77
Granted | shares	0
Exercised | shares	0
Forfeited or canceled | shares	(77)
Balance outstanding at end of period | shares	0
Options exercisable | shares	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Balance outstanding at beginning of period, weighted average exercise price | $ / shares	$ 10.73
Granted, weighted average exercise price | $ / shares	0.00
Exercised, weighted average exercise price | $ / shares	0.00
Forfeited or canceled, weighted average exercise price | $ / shares	10.73
Balance outstanding at end of period, weighted average exercise price | $ / shares	0.00
Options exercisable, weighted average exercise price | $ / shares	$ 0.00