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Income Taxes - Change in Valuation Allowance (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | |
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Dec. 31, 2014
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Dec. 31, 2013
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| Deferred Tax Assets, Valuation Allowance [Roll Forward] | ||
| Valuation allowance, beginning balance | $ 50,782us-gaap_DeferredTaxAssetsValuationAllowance | $ 39,122us-gaap_DeferredTaxAssetsValuationAllowance |
| Acquired valuation allowance from purchased acquisitions | 2,356ent_DeferredTaxesBusinessCombinationsValuationAllowance | |
| Increase in valuation allowance | 22,877us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount | 9,304us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount |
| Valuation allowance, ending balance | $ 73,659us-gaap_DeferredTaxAssetsValuationAllowance | $ 50,782us-gaap_DeferredTaxAssetsValuationAllowance |
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- Details
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- Definition
Deferred Taxes, Business Combinations, Valuation Allowance No definition available.
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- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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