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Commitments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016
Minimum
Commitments and Contingencies Disclosure [Line Items]
Royalties percentage of net sales	1.00%
Maximum
Commitments and Contingencies Disclosure [Line Items]
Royalties percentage of net sales	20.00%

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- Definition

Commitments and Contingencies Disclosure [Line Items]

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- Definition

Percent Of Royalty On Net Sale

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