CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Total
Balance at beginning at Feb. 01, 2014	$ 102,524	$ 348,321	$ 703	$ 451,548
Balance at beginning (in shares) at Feb. 01, 2014	36,791,279
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends paid ($.24 per share)		(8,846)		(8,846)
Restricted stock grants and cancellations (in shares)	112,566
Issuance of shares under employee stock purchase plan	$ 751			751
Issuance of shares under employee stock purchase plan (in shares)	54,992
Repurchased equity awards	$ (1,713)			(1,713)
Repurchased equity awards (in shares)	(30,883)
Stock-based compensation	$ 2,433			2,433
Exercises of stock options	$ 499			499
Exercises of stock options (in shares)	41,314
Income tax expense on exercise of stock options	$ 159	(158)		1
Adjustment for postretirement benefits (net of tax)			(133)	(133)
Net loss		(28,904)		(28,904)
Balance at ending at Jan. 31, 2015	$ 104,653	310,413	570	415,636
Balance at ending (in shares) at Jan. 31, 2015	36,969,268
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends paid ($.24 per share)		(8,929)		(8,929)
Restricted stock grants and cancellations (in shares)	27,250
Issuance of shares under employee stock purchase plan	$ 737			737
Issuance of shares under employee stock purchase plan (in shares)	57,972
Issuance of shares under employee stock ownership plan (in shares)	693
Repurchased and cancelled shares	$ (410)			(410)
Repurchased and cancelled shares (in shares)	(25,131)
Stock-based compensation		2,262		2,262
Exercises of stock options	$ 2,134			2,134
Exercises of stock options (in shares)	202,733
Adjustment for postretirement benefits (net of tax)			(95)	(95)
Net loss		(7,371)		(7,371)
Balance at ending at Jan. 30, 2016	$ 109,596	294,140	475	404,211
Balance at ending (in shares) at Jan. 30, 2016	37,232,785
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends paid ($.24 per share)		(8,969)		(8,969)
Restricted stock grants and cancellations (in shares)	657,400
Issuance of shares under employee stock purchase plan	$ 674			674
Issuance of shares under employee stock purchase plan (in shares)	59,694
Retired shares under employee stock ownership plan (in shares)	(5,867)
Repurchased and cancelled shares	$ (327)			(327)
Repurchased and cancelled shares (in shares)	(18,872)
Stock-based compensation	$ 7,969			7,969
Exercises of stock options	$ 206			206
Exercises of stock options (in shares)	14,900
Income tax expense on exercise of stock options	$ (28)			(28)
Adjustment for postretirement benefits (net of tax)			(9)	(9)
Net loss		(66,531)		(66,531)
Balance at ending at Jan. 28, 2017	$ 118,090	$ 218,640	$ 466	$ 337,196
Balance at ending (in shares) at Jan. 28, 2017	37,940,040