Annual report pursuant to Section 13 and 15(d)

Provision for Income Taxes - Schedule of major components of deferred tax assets and liabilities (Details)

v2.4.1.9
Provision for Income Taxes - Schedule of major components of deferred tax assets and liabilities (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Deferred tax assets    
Net operating loss carryforwards $ 27,487us-gaap_DeferredTaxAssetsOperatingLossCarryforwards $ 34,525us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Tax credit carryforwards 10,839us-gaap_DeferredTaxAssetsTaxCreditCarryforwards 5,745us-gaap_DeferredTaxAssetsTaxCreditCarryforwards
Allowances and other 13,832p_DeferredTaxAssetsAllowancesAndOther 7,037p_DeferredTaxAssetsAllowancesAndOther
Stock options 24,215us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost 10,159us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Depreciation and amortization 255us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment 323us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment
Total deferred tax assets 76,628us-gaap_DeferredTaxAssetsGross 57,789us-gaap_DeferredTaxAssetsGross
Deferred tax liabilities    
Depreciation and amortization (2,645)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment (41)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Total deferred tax liabilities (2,645)us-gaap_DeferredIncomeTaxLiabilities (41)us-gaap_DeferredIncomeTaxLiabilities
Valuation allowance (73,983)us-gaap_DeferredTaxAssetsValuationAllowance (57,748)us-gaap_DeferredTaxAssetsValuationAllowance
Net deferred tax assets $ 0us-gaap_DeferredTaxAssetsNet $ 0us-gaap_DeferredTaxAssetsNet