Quarterly Results of Operations Quarterly Results of Operations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Net revenues	$ 264,170	$ 256,847	$ 273,031	$ 247,938	$ 281,683	$ 248,832	$ 284,264	$ 251,055	$ 1,041,986	$ 1,065,834	$ 1,073,052
Gross profit	27,912	28,855	33,216	23,800	30,096	23,910	26,281	15,889	114,133	96,176	86,187
Operating Income (Loss)	2,712	7,039	10,957	3,006	6,240	5,798	8,724	(2,292)	23,714	18,470	20,864
Provision (benefit) for income taxes	434	4,439	2,323	(76)	(4,949)	1,344	364	(1,911)	7,120	(5,152)	4,710
Net income (loss)	$ 926	$ 1,982	$ (4,229)	$ 2,018	$ (5,265)	$ 678	$ (4,209)	$ 5,127	$ 697	$ (3,669)	$ (5,905)
Net income (loss) per share basic	$ (0.04)	$ (0.11)	$ 0.24	$ (0.11)	$ 0.31	$ (0.04)	$ 0.24	$ (0.30)	$ (0.04)	$ 0.21	$ 0.34
Net income (loss) per share diluted	$ (0.04)	$ (0.11)	$ 0.24	$ (0.11)	$ 0.31	$ (0.04)	$ 0.24	$ (0.30)	$ (0.04)	$ 0.21	$ 0.34
Basic	23,055	18,559	17,858	17,720	17,614	17,614	17,615	17,342	19,233	17,513	17,287
Diluted	23,055	18,559	17,888	17,720	17,629	17,614	17,620	17,342	19,233	17,526	17,310