Note Other assets by major categories (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Other Assets
Net deferred tax assets (net of valuation allowance)	$ 1,217,549	$ 1,243,668
Investments under the equity method	224,029	218,062
Prepaid taxes	161,596	172,550
Other prepaid expenses	85,673	90,320
Derivative assets	13,097	14,094
Trades receivables from brokers and counterparties	53,192	46,630	$ 87,590
Principal, interest and escrow servicing advances	61,697	69,711
Guaranteed mortgage loan claims receivable	171,771	152,403
Others	123,202	138,081
Total other assets	2,111,806	2,145,510
Other Assets
Other Assets
Derivative assets	$ 13,097	$ 14,085