Note Other assets by major categories (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Deferred Costs Capitalized Prepaid And Other Assets Disclosure Abstract
Net deferred tax assets (net of valuation allowance)	$ 1,243,783	$ 1,302,452
Investments under the equity method	206,300	212,838
Prepaid taxes	185,021	180,969
Other prepaid expenses	79,324	79,215
Derivative assets	13,154	16,959
Trades receivables from brokers and counterparties	78,994	78,759	$ 111,964
Principal, interest and escrow servicing advances	74,950	79,862
Guaranteed mortgage loan claims receivable	139,151	101,628
Others	158,383	140,480
Total other assets	$ 2,179,060	$ 2,193,162