Date the declared dividend will be paid, in CCYY-MM-DD format.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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Note 5 - Stockholders' Equity - Dividends (Details) - USD ($)	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2018
Amount	$ 5,617,000	$ 5,479,000	$ 5,367,000
Dividends Declaration Date One [Member]
Record Date	Jan. 02, 2020
Payable	Jan. 09, 2020
Amount	$ 1,430
Dividends Declaration Date One [Member] \| Common Class A [Member]
Dividend Per Share (in dollars per share)	$ 0.072
Dividends Declaration Date One [Member] \| Common Class B [Member]
Dividend Per Share (in dollars per share)	$ 0.06
Dividends Declaration Date Two [Member]
Record Date	Sep. 18, 2019
Payable	Sep. 25, 2019
Amount	$ 1,426
Dividends Declaration Date Two [Member] \| Common Class A [Member]
Dividend Per Share (in dollars per share)	$ 0.072
Dividends Declaration Date Two [Member] \| Common Class B [Member]
Dividend Per Share (in dollars per share)	$ 0.06
Dividend Declaration Date Three [Member]
Record Date	Jul. 10, 2019
Payable	Jul. 17, 2019
Amount	$ 1,387,000
Dividend Declaration Date Three [Member] \| Common Class A [Member]
Dividend Per Share (in dollars per share)	$ 0.072
Dividend Declaration Date Three [Member] \| Common Class B [Member]
Dividend Per Share (in dollars per share)	$ 0.06
Dividend Declaration Date Four [Member]
Record Date	Apr. 23, 2019
Payable	May 03, 2019
Amount	$ 1,374,000
Dividend Declaration Date Four [Member] \| Common Class A [Member]
Dividend Per Share (in dollars per share)	$ 0.072
Dividend Declaration Date Four [Member] \| Common Class B [Member]
Dividend Per Share (in dollars per share)	$ 0.06