Other Liabilities - Components of Other Liabilities (Detail) - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018
Other Liabilities Disclosure [Abstract]
Accrued expenses		$ 19,275	$ 27,683
Legal provision	[1]	19,100	0
Uncertain tax positions		8,250	7,000
Unused trade commissions		5,192	8,615
Deferred rent credit		0	6,231
Trades payable		0	4,978
Other		7,400	9,096
Total Other Liabilities		$ 59,217	$ 63,603

[1] Legal provision represents accrual for certain contingencies discussed in Note 19.