Shareholders' Equity - Stock Option Awards - Stock Option Activity (Details) shares in Thousands	6 Months Ended
	Jul. 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	1,627
Exercised | shares	(29)
Forfeited or canceled | shares	(520)
Balance outstanding at end of period | shares	3,621
Options exercisable | shares	792
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	3.13
Balance outstanding at end of period, weighted average exercise price | $ / shares	1.67
Options exercisable, weighted average exercise price | $ / shares	$ 2.48
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	(10)
Balance outstanding at end of period | shares	291
Options exercisable | shares	291
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	4.85
Balance outstanding at end of period, weighted average exercise price | $ / shares	5.43
Options exercisable, weighted average exercise price | $ / shares	$ 5.43
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