Other Charges, Net - Additional Information (Details) - USD ($) $ in Thousands	1 Months Ended	4 Months Ended	12 Months Ended
	Sep. 30, 2014	Jan. 31, 2015	Jan. 30, 2016	Sep. 30, 2014
Facilities Relocation And Management And Organizational Changes And Fiscal Year Change And Proposed Business Combination [Abstract]
Pretax income from gain realized on the sale of facilities	$ 4,110			$ 4,110
Charges (income) related to relocation of facilities		$ 1,158	$ 2,695	(2,072)
Charges Related to Management and Organizational Changes		2,951	4,196	4,256
Charges related to fiscal year change		$ 1,245	27
Charges related to proposed business combination			$ 61	$ 1,045