Significant Components of Other Current Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Other Liabilities [Line Items]
Deferred revenues	$ 41,574	$ 39,863
Accrued expenses	32,474	26,017
Dividends payable	19,115	19,367
Accrued interest	21,374	2,820
Accrued third-party commissions	25,671	9,810
Other	96,471	68,702
Total	$ 236,679	$ 166,579