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Capital Lease Obligations - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Debt Disclosure [Abstract]
Interest expense related to capital leases	$ 426	$ 452	$ 913	$ 1,090

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- References

No definition available.

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- Definition

The amount, during the lease term, of each minimum [capital] lease payment allocated to interest expense so as to produce a constant periodic rate of interest on the remaining balance of the capital lease obligation.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 840



-SubTopic 30



-Section 35



-Paragraph 6



-URI http://asc.fasb.org/extlink&oid=6916424&loc=d3e43161-112731



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 225



-SubTopic 10



-Section S99



-Paragraph 2



-Subparagraph (SX 210.5-03.8)



-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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