Stockholders' Equity (Details) (USD $)
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0 Months Ended | 12 Months Ended | |||
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Feb. 04, 2014
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Feb. 10, 2012
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Stockholders' Equity (Textual) [Abstract] | |||||
Aggregate shares issued for exercise of options | 1,432,206us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised | 1,270,362us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised | 444,637us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised | ||
Net proceeds from stock options exercised | $ 6,788,000us-gaap_ProceedsFromStockOptionsExercised | $ 5,079,000us-gaap_ProceedsFromStockOptionsExercised | $ 1,680,000us-gaap_ProceedsFromStockOptionsExercised | ||
Shares issued related to restricted stock awards, net of any shares forfeited | 789,345us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures | 461,729us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures | |||
Underwritten public offering and issued shares | 8,846,153us-gaap_StockIssuedDuringPeriodSharesNewIssues | 7,820,000us-gaap_StockIssuedDuringPeriodSharesNewIssues | |||
Shares sold pursuant to the full exercise of an over-allotment option granted to the underwriter | 1,153,846halo_StockIssuedDuringPeriodSharesNewIssuesToUnderwriter | 1,020,000halo_StockIssuedDuringPeriodSharesNewIssuesToUnderwriter | |||
Sale of Stock, Price Per Share | $ 13.00us-gaap_SaleOfStockPricePerShare | $ 10.61us-gaap_SaleOfStockPricePerShare | |||
Net proceeds from common stock issued | 107,700,000us-gaap_ProceedsFromIssuanceOfCommonStock | 81,500,000us-gaap_ProceedsFromIssuanceOfCommonStock | 107,713,000us-gaap_ProceedsFromIssuanceOfCommonStock | 0us-gaap_ProceedsFromIssuanceOfCommonStock | 81,477,000us-gaap_ProceedsFromIssuanceOfCommonStock |
Purchase of common stock by affiliates | 1,360,000halo_PurchaseOfCommonStockByAffiliates | ||||
Purchase of common stock by affiliates amount | 14,400,000halo_PurchaseOfCommonStockByAffiliatesAmount | ||||
Stock options | |||||
Stockholders' Equity (Textual) [Abstract] | |||||
Aggregate shares issued for exercise of options | 1,432,206us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |
1,270,362us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |
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Net proceeds from stock options exercised | 7,800,000us-gaap_ProceedsFromStockOptionsExercised / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |
5,500,000us-gaap_ProceedsFromStockOptionsExercised / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |
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Restricted Stock Units (RSUs) | |||||
Stockholders' Equity (Textual) [Abstract] | |||||
Number of shares of common stock issued related to RSUs, net of RSUs surrendered as payment for withholding taxes | 120,043halo_NumberOfSharesOfCommonStockIssuedRelatedToRSUsNetOfRSUsSurrenderedAsPaymentForWithholdingTaxes / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |
92,201halo_NumberOfSharesOfCommonStockIssuedRelatedToRSUsNetOfRSUsSurrenderedAsPaymentForWithholdingTaxes / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |
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Number of RSUs surrendered to pay for minimum withholding taxes | 74,325halo_NumberOfRSUsSurrenderedToPayForMinimumWithholdingTaxes / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |
61,923halo_NumberOfRSUsSurrenderedToPayForMinimumWithholdingTaxes / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |
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Adjustments Related to Tax Withholding for Share-based Compensation | $ 1,000,000us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |
$ 400,000us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |
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- Definition
Number of RSUs surrendered to pay for minimum withholding taxes. No definition available.
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Number of shares of common stock issued related to RSUs, net of RSUs surrendered as payment for withholding taxes. No definition available.
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Purchase of common stock by affiliates. No definition available.
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Purchase of common stock by affiliates amount. No definition available.
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Stock Issued During Period Shares New Issues To Underwriter No definition available.
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- Definition
The amount of adjustment to stockholders' equity associated with an employee's income tax withholding obligation as part of a net-share settlement of a share-based award. No definition available.
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The cash inflow from the additional capital contribution to the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. No definition available.
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Number of new stock issued during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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