Shareholders' Equity - Stock Option Awards - Stock Option Activity (Details) shares in Thousands	3 Months Ended
	Apr. 29, 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	1,300
Exercised | shares	(29)
Forfeited or canceled | shares	(258)
Balance outstanding at end of period | shares	3,556
Options exercisable | shares	835
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	1.33
Exercised, weighted average exercise price | $ / shares	0.99
Forfeited or canceled, weighted average exercise price | $ / shares	3.38
Balance outstanding at end of period, weighted average exercise price | $ / shares	1.80
Options exercisable, weighted average exercise price | $ / shares	$ 2.92
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	(7)
Balance outstanding at end of period | shares	294
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	4.87
Balance outstanding at end of period, weighted average exercise price | $ / shares	5.42
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	(3)
Balance outstanding at end of period | shares	74
Options exercisable | shares	74
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	10.48
Balance outstanding at end of period, weighted average exercise price | $ / shares	10.74
Options exercisable, weighted average exercise price | $ / shares	$ 10.74