COMPUTATION OF NET LOSS PER SHARE (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Apr. 30, 2014	Apr. 30, 2013
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net loss	$ (76)	$ (1,263)
Less: Dividends declared	(1,103)	(1,088)
Undistributed net loss	(1,179)	(2,351)
Net income per share [Abstract]
Dividends declared	1,103	1,088
Allocation of undistributed net loss	(1,179)	(2,351)
Net loss attributable to common stock	(76)	(1,263)
Common Class A [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net loss	(64)	(1,043)
Less: Dividends declared	(912)	(899)
Undistributed net loss	(976)	(1,942)
Net income per share [Abstract]
Dividends declared	912	899
Allocation of undistributed net loss	(976)	(1,942)
Net loss attributable to common stock	(64)	(1,043)
Weighted average shares of common stock outstanding-basic (in shares)	12,628	12,429
Weighted average potential shares of common stock (in shares)	0	0
Weighted average shares of common stock and potential common shares outstanding-diluted (in shares)	12,628	12,429
Basic net loss per common share (in dollars per share)	$ (0.01)	$ (0.08)
Diluted net loss per common share (in dollars per share)	$ (0.01)	$ (0.08)
Antidilutive securities excluded from computation of earnings per share (in shares)	2,778	2,804
Common Class B [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net loss	(12)	(220)
Less: Dividends declared	(191)	(189)
Undistributed net loss	(203)	(409)
Net income per share [Abstract]
Dividends declared	191	189
Allocation of undistributed net loss	(203)	(409)
Net loss attributable to common stock	$ (12)	$ (220)
Weighted average shares of common stock outstanding-basic (in shares)	3,168	3,145
Weighted average potential shares of common stock (in shares)	0	0
Weighted average shares of common stock and potential common shares outstanding-diluted (in shares)	3,168	3,145
Basic net loss per common share (in dollars per share)	$ 0	$ (0.07)
Diluted net loss per common share (in dollars per share)	$ 0	$ (0.07)
Antidilutive securities excluded from computation of earnings per share (in shares)	371	456