Shareholders' Equity Shareholders' Equity - Restricted Stock Awards (Details)	3 Months Ended						9 Months Ended
	Oct. 29, 2016 USD ($) shares	Jul. 30, 2016 USD ($) tranche shares	Apr. 30, 2016 USD ($) shares	Oct. 31, 2015 USD ($) shares	Aug. 01, 2015 USD ($) tranche shares	May 02, 2015 USD ($) shares	Oct. 29, 2016 USD ($) shares	Oct. 31, 2015 USD ($)	Aug. 18, 2016 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense							$ 1,432,000	$ 2,138,000
Granted | shares							1,516,000
Aggregate market value of the restricted stock at the date of the award									$ 1,800,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 678,000			$ 445,000			$ 1,058,000	1,234,000
Unrecognized compensation cost related to non-vested awards	$ 1,899,000						$ 1,899,000
Weighted average expected life							1 year 9 months 9 days
Restricted stock vested in period, total fair value							$ 653,000	249,000
Granted | shares	28,119	167,142			182,334
Number of board members granted restricted stock | tranche		6			8
Aggregate market value of the restricted stock at the date of the award	$ 51,000	$ 292,000			$ 520,000		51,000
Award Vesting Period		12 months			12 months
Restricted Stock - Time Based [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted | shares	34,563	60,916	188,991	32,000	26,810	67,786
Aggregate market value of the restricted stock at the date of the award	$ 57,000	$ 78,000	$ 187,101	$ 80,640	$ 158,000	$ 417,593	$ 57,000	$ 80,640
Award Vesting Period	3 years	3 years	3 years	3 years	3 years	3 years