Note Other assets by major categories (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Other Assets
Net deferred tax assets (net of valuation allowance)	$ 1,207,597	$ 1,243,668
Investments under the equity method	210,067	218,062
Prepaid taxes	164,531	172,550
Other prepaid expenses	87,136	90,320
Derivative assets	14,234	14,094
Trades receivables from brokers and counterparties	999	46,630	$ 80,125
Receivables from investment maturities	270,000	0	$ 0
Principal, interest and escrow servicing advances	71,167	69,711
Guaranteed mortgage loan claims receivable	174,964	152,403
Others	129,232	138,081
Total other assets	2,329,927	2,145,510
Other Assets
Other Assets
Derivative assets	$ 14,234	$ 14,085