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401(k) Plan (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]
Employer matching contribution, percent	50.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Maximum annual contribution per employee, percent	6.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Company's contribution to 401(k) plan	$ 275us-gaap_DefinedContributionPlanCostRecognized	$ 196us-gaap_DefinedContributionPlanCostRecognized	$ 170us-gaap_DefinedContributionPlanCostRecognized

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- Details

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Namespace Prefix:	us-gaap_
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- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942

+ Details

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

+ Details

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