Fair Value Measurements - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Fair value measurement, description	the Company measures fair value using (i) a valuation technique that uses the quoted price of the identical liability when traded as an asset or quoted prices for similar liabilities when traded as assets or (ii) another valuation technique that is consistent with the principles of fair value measurement, such as the income approach or the market approach.