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Business and Basis of Presentation (Additional Information) (Detail)	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2015
Schedule Of Summary Of Significant Accounting Policies [Line Items]
Highly-liquid debt instruments maturity days	90 days
Minimum [Member] | Equipment and Furnishings [Member]
Schedule Of Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives		3 years
Maximum [Member] | Equipment and Furnishings [Member]
Schedule Of Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives		5 years

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- Definition

Maximum Maturity Period To Consider All Highly Liquid Debt Instruments As Cash And Cash Equivalents

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- Definition

Schedule Of Summary Of Significant Accounting Policies [Line Items]

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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