The amount of reduction in the allocated share based compensation expense during the period.

No definition available.

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Represents the number of participants in the Company's non-qualified deferred compensation plan.

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No definition available.

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The amount of increase (decrease) to common stock relating to stock option exercises.

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No definition available.

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Reduction or Increase of income tax expense related to the exercises of stock options in which the employees sold the common shares prior to the passage of 12 months from the date of exercise.

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No definition available.

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Reduction of federal income taxes payable related to the exercises of stock options in which the employees sold the common shares prior to the passage of 12 months from the date of exercise.

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No definition available.

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Reduction of income tax expense related to the exercises of stock options in which the employees sold the common shares prior to the passage of 12 months from the date of exercise.

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No definition available.

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Represents the ratio in which available shares are consumed for each full value share awarded by the company as part of a share-based compensation arrangement.

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No definition available.

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Aggregate grant date fair value of options vested.

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No definition available.

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The estimated forfeiture rate used in the calculation of stock option expense for the period.

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No definition available.

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Number of fully vested and expected to vest equity-based compensation awards outstanding that can be converted into shares under option plan.

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No definition available.

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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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Number of shares issued pursuant to the terms of a deferred compensation arrangement.

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Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.

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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 grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of additional shares authorized for issuance under an established share-based compensation plan.

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No definition available.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Gross number of share options (or share units) granted during the period.

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No definition available.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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No definition available.

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

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

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Weighted average remaining contractual term for fully vested and expected to vest exercisable or convertible options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Gross value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP). Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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Number of shares that have been repurchased during the period and are being held in treasury.

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The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Note 10 - Equity Compensation (Details Textual)	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended		57 Months Ended
Note 10 - Equity Compensation (Details Textual)	Nov. 30, 2016 shares	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) shares	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) $ / shares shares	Jun. 30, 2017 USD ($) shares	Jun. 30, 2016	Sep. 30, 2017	Jun. 30, 2015 shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term				7 years 146 days	7 years 36 days	7 years 146 days	6 years 219 days
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant \| shares		1,453,356		1,453,356
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number \| shares		3,448,677	3,625,372	3,448,677	3,625,372	3,119,688			2,976,490
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number \| shares		1,527,651	1,700,025	1,527,651	1,700,025
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized		$ 2,563,987		$ 2,563,987
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition				2 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross \| shares				794,537	834,320
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price \| $ / shares				$ 5.98	$ 11.05
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value \| $ / shares				$ 1.73	$ 3.83
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term				5 years 255 days	5 years 36 days
Share Based Compensation Valuation Assumptions Expected Forfeiture Rate		8.54%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number \| shares		3,344,138		3,344,138
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price \| $ / shares		$ 8.13		$ 8.13
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value		$ 905,309		$ 905,309
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term				7 years 146 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value				$ 22,079	$ 99,883
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Aggregate Grant Date Fair Value				1,793,086	1,779,490
Proceeds from Stock Options Exercised				174,965	295,030
Reduction of Federal Income Taxes Payable Related To Stock Option Exercise				83,608	95,443
Increase (Decrease) In Common Stock Related To Stock Option Exercise				559,474	(124,056)
Reduction of Income Tax Expense Related to Stock Option Exercises				87,354	22,073
Reduction of Deferred Tax Asset Related to Stock Option Exercises				$ 170,462	$ 197,427
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period \| shares				19,920	21,199
Stock Issued During Period, Value, Share-based Compensation, Gross				$ 155,974	$ 228,000
Deferred Compensation Plan, Number of Participants		38		38
Treasury Stock, Shares \| shares		245,732		245,732		257,898
Treasury Stock, Value		$ 2,187,811		$ 2,187,811		$ 2,456,875
Deferred Compensation Arrangement with Individual, Shares Issued \| shares				42,280	0
Employee Salary Deferrals or Company Contributions [Member]
Treasury Stock, Value, Acquired, Cost Method				$ 106,537	$ 390,288
Treasury Stock, Shares, Acquired \| shares				15,225	39,487
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term				10 years
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price \| $ / shares				$ 6.54	$ 11.06
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value \| $ / shares				$ 1.96	$ 3.83
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term				10 years	10 years
Share Based Compensation Valuation Assumptions Expected Forfeiture Rate								8.30%
Minimum [Member]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price \| $ / shares				$ 5.92	$ 9.65
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value \| $ / shares				$ 1.71	$ 3.29
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term				9 years 182 days	9 years 182 days
Share Based Compensation Valuation Assumptions Expected Forfeiture Rate								2.00%
Service-based Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period				3 years		4 years
Performance-based Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period				3 years
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period				3 years	4 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized		$ 775,144		$ 775,144
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition				2 years 180 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number \| shares		187,150	118,575	187,150	118,575	133,335
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value \| $ / shares				$ 5.92	$ 11.06
Share Based Compensation Valuation Assumptions Expected Forfeiture Rate				8.50%	3.40%
Allocated Share-based Compensation Expense		$ 81,895	$ 89,896	$ 337,310	$ 392,197
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period \| shares				91,490	71,700
Dividends				$ 38,463	$ 19,826
Share-based Compensation Arrangement By Share-based Payment Award, Equity Other Than Options, Vested and Expected To Vest, Outstanding, Number \| shares		176,073	114,531	176,073	114,531
Restricted Stock Units (RSUs) [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms				3 years 182 days	3 years 182 days
Restricted Stock Units (RSUs) [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms				2 years 182 days	2 years 182 days
Employee Stock Option [Member]
Allocated Share-based Compensation Expense		$ 367,920		$ 1,125,728	$ 1,296,009
Allocated Share Based Compensation Expense, Reduction			$ (142,434)
The 2012 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized \| shares	1,600,000
Share-based Compensation Arrangement by Share-based Payment Award, Fungible Share Ratio	2.5