Income Taxes (Details 3) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets:
Accruals	$ 1,053	$ 1,519
Stock compensation	1,210	1,070
Net operating losses	14,681	9,760
Total deferred tax assets	16,944us-gaap_DeferredTaxAssetsGross	12,349us-gaap_DeferredTaxAssetsGross
Basis difference in fixed assets	2	(14)
Valuation allowance	(16,946)	(12,335)
Total net deferred tax assets

Deferred tax assets basis difference in fixed assets.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from reserves and accruals.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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