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Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2013	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Net operating loss carryforwards		$ 0
Valuation allowance, deferred tax assets		25,758,000
Deferred tax assets valuation allowance increase	$ 10,241,000
Amount generated in cash refund		$ 1,600,000

X

- Definition

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

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 740



-SubTopic 10



-Section 25



-Paragraph 20



-Subparagraph (b)



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-Name Accounting Standards Codification



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-Section 50



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-Section 50



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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.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 740



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-Paragraph 2



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- Definition

Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 210



-SubTopic 10



-Section S99



-Paragraph 1



-Subparagraph (SX 210.5-02.8)



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-Number 210



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Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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



-Publisher FASB



-Name Accounting Standards Codification



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