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Commitments and Contingencies - Schedule of Future Minimum Payments for Licensing and Similar Agreements (Detail) $ in Thousands	Dec. 31, 2017 USD ($)
Commitments and Contingencies Disclosure [Abstract]
2018	$ 80,624
2019	122,651
2020	84,051
2021	29,746
2022	4,451
Thereafter	0
Total future minimum licensing and similar agreements obligations	$ 321,523

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- Definition

For licensing and similar agreements containing provisions for future minimum payments, the total required payments due.

+ References

No definition available.

+ Details

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- Definition

For licensing and similar agreements containing provisions for future minimum payments, required payments due within one year of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

For licensing and similar agreements containing provisions for future minimum payments, required payments due within the fifth year of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

For licensing and similar agreements containing provisions for future minimum payments, required payments due within the fourth year of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

For licensing and similar agreements containing provisions for future minimum payments, required payments due within the third year of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

For licensing and similar agreements containing provisions for future minimum payments, required payments due within the second year of the balance sheet date.

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No definition available.

+ Details

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- Definition

For licensing and similar agreements containing provisions for future minimum payments, required payments due after the fifth year of the balance sheet date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- References

No definition available.

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