Quarterly Financial Information (unaudited) - Selected Consolidated Statements of Operations Data (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2021	Aug. 01, 2021	May 02, 2021	Jan. 31, 2021	Nov. 01, 2020	Aug. 02, 2020	May 03, 2020	Feb. 02, 2020	Oct. 31, 2021	Nov. 01, 2020
Quarterly Financial Information Disclosure [Abstract]
NET REVENUE	$ 227,809	$ 217,534	$ 222,092	$ 217,958	$ 211,073	$ 185,941	$ 207,275	$ 217,766	$ 885,393	$ 822,055
Cost of services	189,648	181,334	185,613	185,276	176,844	155,983	175,038	186,339	741,871	694,204
GROSS MARGIN	38,161	36,200	36,479	32,682	34,229	29,958	32,237	31,427	143,522	127,851
Selling, administrative and other operating costs	34,691	34,039	32,950	33,747	30,735	31,245	36,189	39,497	135,427	137,666
Restructuring and severance costs	1,123	489	595	632	438	546	411	1,246	2,839	2,641
Impairment charges	20	112	261	31	14,518	2,384	0	11	424	16,913
OPERATING INCOME (LOSS)	2,327	1,560	2,673	(1,728)	(11,462)	(4,217)	(4,363)	(9,327)	4,832	(29,369)
Interest income	7	15	8	7	8	9	31	30	37	78
Interest expense	(423)	(460)	(438)	(484)	(439)	(476)	(652)	(730)	(1,805)	(2,297)
Foreign exchange gain (loss), net	39	(34)	71	242	(62)	571	(266)	(328)	318	(85)
Other income (expense), net	(150)	(152)	(147)	(156)	(291)	(168)	(152)	(258)	(605)	(869)
INCOME (LOSS) BEFORE INCOME TAXES	1,800	929	2,167	(2,119)	(12,246)	(4,281)	(5,402)	(10,613)	2,777	(32,542)
Income tax provision	474	314	288	327	271	556	23	195	1,403	1,045
NET INCOME (LOSS)	$ 1,326	$ 615	$ 1,879	$ (2,446)	$ (12,517)	$ (4,837)	$ (5,425)	$ (10,808)	$ 1,374	$ (33,587)
Basic:
Net income (loss) (in USD per share)	$ 0.06	$ 0.03	$ 0.09	$ (0.11)	$ (0.58)	$ (0.22)	$ (0.25)	$ (0.50)	$ 0.06	$ (1.56)
Weighted average number of shares (in shares)	21,981	21,968	21,793	21,793	21,607	21,589	21,416	21,416	21,884	21,507
Diluted:
Net income (loss) (in USD per share)	$ 0.06	$ 0.03	$ 0.08	$ (0.11)	$ (0.58)	$ (0.22)	$ (0.25)	$ (0.50)	$ 0.06	$ (1.56)
Weighted average number of shares (in shares)	22,811	22,651	22,588	21,793	21,607	21,589	21,416	21,416	22,609	21,507