Consolidated Statements of Equity (Unaudited) (USD $) In Thousands	Total	Common Stock [Member] Common Class A [Member]	Common Stock [Member] Common Class B [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]
Beginning balance at Aug. 01, 2014	$ 16,699	$ 8	$ 110	$ 14,886	$ 2,037		$ (342)
Beginning balance, Shares at Aug. 01, 2014		787	11,013
Common stock issued for compensation	1,229		2	1,227
Common stock issued for compensation, Shares			207
Common stock issued for exercises of stock options	(26)			26
Common stock issued for exercises of stock options, Shares			5
Common stock repurchased for withheld tax purposes	(348)					(348)
Sale of treasury stock	65					65
Forfeiture of unvested shares
Forfeiture of unvested shares, Shares			(1)
Net income	636				429		207
Ending balance at Jan. 31, 2015	$ 18,307	$ 8	$ 112	$ 16,139	$ 2,466	$ (283)	$ (135)
Ending balance, Shares at Jan. 31, 2015		787	11,224