STOCKHOLDERS' EQUITY (Details) (USD $)	6 Months Ended
	Jul. 31, 2012	Jul. 31, 2011
Dividends [Abstract]
Fair Value of Shares Issued	$ 334,000	$ 1,224,000
Stock Repurchase Activity [Abstract]
Number of shares authorized for repurchase (in shares)	1,000,000
Cash consideration for repurchase of common stock	3,899,000	0
Shares available for purchase under the plan (in shares)	328,000
Dividends Declaration Date One [Member]
Dividends [Abstract]
Declared Date	Dec. 14, 2011
Record Date	Mar. 13, 2012
Payable Date	Apr. 23, 2012
Amount paid in Cash	948,000
Class A Shares Issued	12,000
Fair Value of Shares Issued	128,000
Dividends Declaration Date Two [Member]
Dividends [Abstract]
Declared Date	Mar. 20, 2012
Record Date	Jun. 04, 2012
Payable Date	Jul. 16, 2012
Amount paid in Cash	893,000
Class A Shares Issued	15,000
Fair Value of Shares Issued	$ 206,000
Dividends Declaration Date Three [Member]
Dividends [Abstract]
Declared Date	Jun. 12, 2012
Record Date	Aug. 28, 2012
Payable Date	Oct. 09, 2012
Common Class A [Member]
Stock Repurchase Activity [Abstract]
Number of shares repurchased	266,000
Average share price	$ 13.19
Common Class A [Member] | Dividends Declaration Date One [Member]
Dividends [Abstract]
Dividend (in dollars Per Share)	$ 0.072
Common Class A [Member] | Dividends Declaration Date Two [Member]
Dividends [Abstract]
Dividend (in dollars Per Share)	$ 0.072
Common Class A [Member] | Dividends Declaration Date Three [Member]
Dividends [Abstract]
Dividend (in dollars Per Share)	$ 0.072
Common Class B [Member]
Stock Repurchase Activity [Abstract]
Number of shares repurchased	30,000
Average share price	$ 13.12
Common Class B [Member] | Dividends Declaration Date One [Member]
Dividends [Abstract]
Dividend (in dollars Per Share)	$ 0.06
Common Class B [Member] | Dividends Declaration Date Two [Member]
Dividends [Abstract]
Dividend (in dollars Per Share)	$ 0.06
Common Class B [Member] | Dividends Declaration Date Three [Member]
Dividends [Abstract]
Dividend (in dollars Per Share)	$ 0.06