Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Expenditures for salaries of officers. Does not include allocated share-based compensation, pension and post-retirement benefit expense or other labor-related non-salary expense. For commercial and industrial companies, excludes any direct and overhead labor that is included in cost of goods sold.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Number of options outstanding, including both vested and non-vested options.

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Number of share instruments newly issued under a share-based compensation plan.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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Note 3 - Stock-based Compensation Plans and Warrants (Details Textual) - USD ($)			1 Months Ended	6 Months Ended		12 Months Ended	37 Months Ended	54 Months Ended
	Jun. 10, 2014	Dec. 18, 2009	Jun. 30, 2014	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2017	Jun. 09, 2014	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period				0
Allocated Share-based Compensation Expense				$ 1,921,000	$ 759,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number				507,500		507,500	507,500
Employee Stock Option [Member]
Allocated Share-based Compensation Expense				$ 0	$ 0
Two Thousand Nine Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period			45,235
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	850,000	850,000
Two Thousand Nine Equity Incentive Plan [Member] \| Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period								297,265
Two Thousand Nine Equity Incentive Plan [Member] \| Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period		10 years
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period								507,500
Two Thousand Nine Equity Incentive Plan [Member] \| Employee Stock Option [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		2 years
Two Thousand Nine Equity Incentive Plan [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	162,500
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period				1,700,000
Twenty Fourteen Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	675,000
Twenty Fourteen Equity Incentive Plan [Member] \| Outside Director [Member] \| Accrues Yearly [Member]
Officers' Compensation	$ 30,000
Allocated Share-based Compensation Expense	20,000
Twenty Fourteen Equity Incentive Plan [Member] \| Outside Director [Member] \| Accrues Quarterly [Member]
Officers' Compensation	7,500
Allocated Share-based Compensation Expense	$ 5,000
Twenty Fourteen Equity Incentive Plan [Member] \| Restricted Stock Units (RSUs) [Member] \| Water Project [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized									200,000
Two Thousand Fourteen Equity Incentive Plan [Member] \| Directors and Consultants [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period							594,073
Two Thousand Fourteen Equity Incentive Plan [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period						8,694