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, 2018	Jul. 31, 2018	Apr. 30, 2018	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Net revenues	$ 300,055	$ 294,883	$ 297,340	$ 247,666	$ 264,170	$ 256,847	$ 273,031	$ 247,938	$ 1,139,944	$ 1,041,986	$ 1,065,834
Gross profit	23,822	32,880	31,503	27,890	28,583	29,164	33,504	24,104	116,095	115,355	96,336
Operating Income (Loss)	(879)	7,535	7,279	4,571	3,051	7,366	11,263	3,328	18,506	25,008	18,646
Provision (benefit) for income taxes	4,635	(7,014)	218	(3,058)	434	4,439	2,323	(76)	(5,219)	7,120	(5,152)
Net income (loss)	$ 8,456	$ (11,052)	$ (4,025)	$ (4,858)	$ 926	$ 1,982	$ (4,229)	$ 2,018	$ (11,479)	$ 697	$ (3,669)
Net income (loss) per share basic	$ (0.36)	$ 0.47	$ 0.17	$ 0.21	$ (0.04)	$ (0.11)	$ 0.24	$ (0.11)	$ 0.49	$ (0.04)	$ 0.21
Net income (loss) per share diluted	$ (0.36)	$ 0.47	$ 0.17	$ 0.21	$ (0.04)	$ (0.11)	$ 0.24	$ (0.11)	$ 0.49	$ (0.04)	$ 0.21
Basic	23,309	23,278	23,222	23,107	23,055	18,559	17,858	17,720	23,229	19,233	17,513
Diluted	23,309	23,453	23,357	23,287	23,055	18,559	17,888	17,720	23,369	19,233	17,526