Maximum aggregate fair market value of options granted to individual.

No definition available.

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Namespace Prefix:	hnna_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of participant rights to receive options or stock appreciation.

+ References

No definition available.

+ Details

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Namespace Prefix:	hnna_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Share based compensation arrangement by share based payment award award grant period.

+ References

No definition available.

+ Details

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Namespace Prefix:	hnna_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Share based compensation arrangement by share based payment award exercise price percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	hnna_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Share based compensation arrangement by share based payment award options vested and expected to vest rate.

+ References

No definition available.

+ Details

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Namespace Prefix:	hnna_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Shareholding percentage of shareholder.

+ References

No definition available.

+ Details

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Namespace Prefix:	hnna_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	hnna_StockBasedCompensationAdditionalTextualAbstract
Namespace Prefix:	hnna_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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Balance Type:	na
Period Type:	duration

- Definition

Term period of option.

+ References

No definition available.

+ Details

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Namespace Prefix:	hnna_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average vesting period for recognition of compensation expenses.

+ References

No definition available.

+ Details

Name:	hnna_WeightedAverageVestingPeriodForRecognitionOfCompensationExpenses
Namespace Prefix:	hnna_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph h

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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.

+ References

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

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).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(c)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The highest quantity of shares an employee can purchase under the plan per period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesPerEmployee
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Stock - Based Compensation (Details Textual) (USD $)	6 Months Ended
Stock - Based Compensation (Details Textual) (USD $)	Mar. 31, 2013 participant	Mar. 31, 2012	Sep. 30, 2012
Stock-Based Compensation (Textual) [Abstract]
Number of restricted stock units granted	0	0
Number of common stock issued for restricted stock units vested	5,884,172		5,759,857
Stock-Based Compensation (Additional Textual) [Abstract]
Shares available for issuance	50.00%
Number of participant rights to receive options or stock appreciation	0
Shares grant period	10 years
Maximum aggregate fair market value of shares	$ 100,000
Weighted-average vesting period for recognition of compensation expenses	4 years
Compensation expense related to non-vested awards not yet recognized	$ 0
Maximum [Member]
Stock-Based Compensation (Textual) [Abstract]
Date of grant remaining term of option	10 years
Vesting period of RSUs granted under the Plan	5 years
Minimum [Member]
Stock-Based Compensation (Textual) [Abstract]
Percentage of exercise price of fair value	110.00%
Stock Appreciation Rights (SARs) [Member]
Stock-Based Compensation (Textual) [Abstract]
Aggregate number of shares	50,000
Restricted Stock Units (RSUs) [Member]
Stock-Based Compensation (Textual) [Abstract]
Vesting period of RSUs granted under the Plan	4 years
Number of options, granted	0	0
Rate of restricted stock units vest under plan	25.00%
Number of common stock issued for restricted stock units vested	12,127
Incentive Stock Option Plan [Member]
Stock-Based Compensation (Textual) [Abstract]
Stock option granted to shareholder	10.00%