Aggregate number of common shares reserved for future issuance.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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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 estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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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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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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

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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.

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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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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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Note 6 - Capital Stock, Treasury Stock, Contributed Capital and Stock Options: (Detail) (USD $)	3 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended			3 Months Ended					6 Months Ended	9 Months Ended
	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Common Class A [Member] Directors Plans [Member]	Mar. 31, 2012 Employee Plans [Member]	Jun. 30, 2012 Employee Plans [Member]	Jun. 30, 2011 Employee Plans [Member]	Sep. 30, 2011 Employee Plans [Member]	Jun. 30, 2012 Directors Plans [Member]	Mar. 31, 2012 Directors Plans [Member]	Dec. 31, 2011 Directors Plans [Member]	Jun. 30, 2011 Directors Plans [Member]	Mar. 31, 2011 Directors Plans [Member]	Jun. 30, 2011 Directors Plans [Member]	Jun. 30, 2012 Directors Plans [Member]	Jun. 30, 2011 Directors Plans [Member]	Sep. 30, 2011 Directors Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term							10 years
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit (in Dollars per share)		$ 3.125	$ 2.925			$ 3.55		$ 3.125			$ 2.925	$ 2.925			$ 2.925
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options	13,850			13,850	42,000			41,500	26,850	38,000			38,000		38,000	38,000	38,000	38,000
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit (in Dollars per share)	$ 3.55	$ 3.55						$ 5.00			$ 3.55	$ 11.00		$ 4.25
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period	800					26,850					3,000			8,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)			42,000	64,850							7,000			5,000	11.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Remaining Contractual Term												3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period												3 years
Share-based Compensation (in Dollars)			$ 8,547	$ 9,750						$ 2,841			$ 2,865			$ 8,547	$ 9,750
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate				5.50%						5.50%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			10 years	10 years												0 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate																	0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate																87.00%	75.00%
Common Stock, Capital Shares Reserved for Future Issuance			1,008,170