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10. Employee Benefit Plans (Details) - Schedule of Net Benefit Costs - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 29, 2017
Oct. 30, 2016
Oct. 29, 2017
Oct. 30, 2016
Net periodic benefit costs        
Service cost $ 76 $ 94 $ 228 $ 282
Interest cost 280 295 839 885
Actuarial loss (gain) 15 (18) 45 (54)
Expected return on pension plan assets (234) (197) (700) (591)
Expected administrative expenses 70 70 210 210
Consolidated net periodic benefit costs $ 207 $ 244 $ 622 $ 732