Weighted average remaining contractual life

No definition available.

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Namespace Prefix:	HSKA_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option 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)(1)(iii)

-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(1)(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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(b)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 2: 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

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)-(ii)

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

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(a)

-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

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

- Definition

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

+ References

+ Details

Name:	us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

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.

+ References

+ Details

Name:	us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

STOCK OPTIONS OUTSTANDING (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Stock options Outstanding	1,245,161	1,448,675	1,341,876	1,291,634
Average Remaining Contractual Life in Years	$ 1.85
Weighted Average Exercise Price on Outstanding Options	$ 12.129	$ 11.427	$ 11.871
Stock Options Exercisable		$ 10.425	$ 11.003	$ 11.846
Weighted Average Exercise Price on Exercisable Options	$ 11.054	$ 10.425	$ 11.003
$ 2.70 - $6.76
Stock options Outstanding	270,303
Average Remaining Contractual Life in Years	$ 7.11
Weighted Average Exercise Price on Outstanding Options	$ 5.166
Stock Options Exercisable	$ 188,466
Weighted Average Exercise Price on Exercisable Options	$ 5.040
$ 6.77 - $8.60
Stock options Outstanding	272,832
Average Remaining Contractual Life in Years	$ 8.01
Weighted Average Exercise Price on Outstanding Options	$ 7.764
Stock Options Exercisable	$ 94,614
Weighted Average Exercise Price on Exercisable Options	$ 7.667
$ 8.61 - $12.40
Stock options Outstanding	234,643
Average Remaining Contractual Life in Years	$ 3.50
Weighted Average Exercise Price on Outstanding Options	$ 9.693
Stock Options Exercisable	$ 220,586
Weighted Average Exercise Price on Exercisable Options	$ 9.683
$ 12.41 - $16.50
Stock options Outstanding	237,811
Average Remaining Contractual Life in Years	$ 2.85
Weighted Average Exercise Price on Outstanding Options	$ 14.051
Stock Options Exercisable	$ 237,811
Weighted Average Exercise Price on Exercisable Options	$ 14.051
$ 16.51 - $31.50
Stock options Outstanding	229,572
Average Remaining Contractual Life in Years	$ 2.95
Weighted Average Exercise Price on Outstanding Options	$ 20.182
Stock Options Exercisable	$ 229,572
Weighted Average Exercise Price on Exercisable Options	$ 20.182
$ 2.70 - $31.50
Stock options Outstanding	1,245,161
Average Remaining Contractual Life in Years	$ 5.05
Weighted Average Exercise Price on Outstanding Options	$ 11.054
Stock Options Exercisable	$ 971,029
Weighted Average Exercise Price on Exercisable Options	$ 12.129