5. Fair Value Measurements (Details) - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis - USD ($) $ in Thousands		Apr. 30, 2017	Jan. 29, 2017
Assets measured at fair value
Company-owned life insurance		$ 22,687	$ 22,366
Pension plan assets	[1]	13,881	13,881
Fair Value, Inputs, Level 1 [Member]
Assets measured at fair value
Company-owned life insurance		0	0
Pension plan assets	[1]	13,881	13,881
Fair Value, Inputs, Level 2 [Member]
Assets measured at fair value
Company-owned life insurance		22,687	22,366
Pension plan assets	[1]	0	0
Fair Value, Inputs, Level 3 [Member]
Assets measured at fair value
Company-owned life insurance		0	0
Pension plan assets	[1]	$ 0	$ 0

[1] as of January 29, 2017 for Pension Plan assets.