Other Assets - Current (Detail) - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
US federal tax receivables		$ 15,855	$ 16,757
Insurance receivable	[1]	12,876
Prepaid advertising		914	1,100
Prepaid expenses		1,643	2,451
Prepaid taxes		6,171	1,755
Prepaid insurance		822	1,446
Due from related parties		3,885	3,903
Other current assets		634	645
Total		$ 42,800	$ 28,057

[1] During the Current Quarter, the Company recorded an asset of approximately $12.9 million related to insurance claims that the Company believes are probable of recovery from various insurance carriers. These claims pertain to expenses incurred related to certain litigation claims against the Company and related expenses that are discussed throughout Note 11.