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EMPLOYEE BENEFIT PLANS: Additional information regarding options outstanding, by exercise price range (Details 1) - Stock options	12 Months Ended
	Mar. 31, 2019 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Avg Remaining Contractual Life (years)	2 years 2 months 12 days
Options Outstanding, Number | shares	101,332
Options Outstanding, Weighted Average Exercise Price	$ 3.26
Options Exercisable, Number | shares	101,332
Options Exercisable, Weighted Average Exercise Price	$ 3.26
$1.00 - $3.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Price, lower	1
Range of Exercise Price, upper	$ 3
Weighted Avg Remaining Contractual Life (years)	3 years 10 months 17 days
Options Outstanding, Number | shares	51,332
Options Outstanding, Weighted Average Exercise Price	$ 2.7
Options Exercisable, Number | shares	51,332
Options Exercisable, Weighted Average Exercise Price	$ 2.7
$3.01 - $5.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Price, lower	3.01
Range of Exercise Price, upper	$ 5
Weighted Avg Remaining Contractual Life (years)	5 months 23 days
Options Outstanding, Number | shares	50,000
Options Outstanding, Weighted Average Exercise Price	$ 3.84
Options Exercisable, Number | shares	50,000
Options Exercisable, Weighted Average Exercise Price	$ 3.84

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

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-Name Accounting Standards Codification
-Topic 718
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-Section 50
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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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