Fair Value Measurements (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 31, 2015	Nov. 01, 2014	Oct. 31, 2015	Nov. 01, 2014	Jan. 31, 2015
Fair Value Measurements [Abstract]
Long-lived assets, gross carrying amount	$ 573,000	$ 2,100,000	$ 1,100,000	$ 3,100,000	$ 4,300,000
Long-lived assets, fair value	412,000	1,600,000	891,000	2,400,000	3,300,000
Long-lived assets, impairment charges	161,000	510,000	212,000	657,000	1,000,000
Remaining unamortized basis	$ 69,000	$ 551,000	$ 211,000	$ 717,000	$ 1,200,000