CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Total	Total
Balance, Beginning of Period at Jan. 31, 2017	$ 299	$ (313,838)	$ 145,767	$ 508,207	$ 47,839	$ 388,274
Balance, Beginning of Period (in Shares) at Jan. 31, 2017	29,853	23,292
Net income				7,485	2,298	9,783	$ 9,783
Issuance of equity awards and stock based compensation expense		$ 180	1,084			1,264
Issuance of equity awards and stock based compensation expense (in Shares)		(5)
Noncontrolling interests distribution and other					(1,725)	(1,725)	(1,725)
Balance, End of Period at Jul. 31, 2017	$ 299	$ (313,658)	146,851	515,692	48,412	397,596
Balance, End of Period (in Shares) at Jul. 31, 2017	29,853	23,287
Balance, Beginning of Period at Jan. 31, 2018	$ 299	$ (313,643)	146,923	547,913	50,434	431,926	431,926
Balance, Beginning of Period (in Shares) at Jan. 31, 2018	29,853	23,287
Net income				18,713	2,129	20,842	20,842
Treasury stock acquired		$ (16,648)				(16,648)
Treasury stock acquired (in Shares)		228
Capital contributions					246	246	246
Issuance of equity awards and stock based compensation expense		$ 292	1,289			1,581
Issuance of equity awards and stock based compensation expense (in Shares)		(13)
Noncontrolling interests distribution and other					(1,699)	(1,699)	(1,699)
Balance, End of Period at Jul. 31, 2018	$ 299	$ (329,999)	$ 148,212	$ 566,626	$ 51,110	$ 436,248	$ 436,248
Balance, End of Period (in Shares) at Jul. 31, 2018	29,853	23,502