STOCKHOLDERS' EQUITY - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2016	Sep. 30, 2015
Class Of Stock [Line Items]
Common stock, shares authorized	2,000,000,000		2,000,000,000	2,000,000,000
Common stock, par value	$ 0.1		$ 0.1	$ 0.1
Common stock, shares issued	218,605,179		216,051,128	218,605,179
Common stock, shares outstanding	217,387,647		215,088,698	217,387,647
Granted shares of restricted stock				1,925,575
Corporation has authorized shares of preferred stock	50,000,000		50,000,000	50,000,000
Preferred stock, par value	$ 1			$ 1
Stock repurchase plan treasury stock	1,217,532		962,430	1,217,532
Legal surplus reserve rate	10.00%
Original amount contributed in percentage	20.00%
Repurchased of common stock				255,102	181,649
Liquidation value per share	$ 25			$ 25
Legal surplus reserve amount	$ 42,798		$ 42,798	$ 42,798
Conversion Of Stock Shares Issued1		852,831
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number	4,209,323		2,968,461	4,209,323
Trust Preferred Securities Exchanged Liquidation Value		$ 5,300		$ 0	$ 5,303
Legal Surplus Amount Additions			$ 2,800
Omnibus Plan [Member]
Class Of Stock [Line Items]
Restricted stock available for issuance	6,924,391			6,924,391
Restricted Stock [Member]
Class Of Stock [Line Items]
Repurchased of common stock				65,498	72,918
Series A Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred stock dividend rate percentage				7.125%
Series B Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred stock dividend rate percentage				8.35%
Series C Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred stock dividend rate percentage				7.40%
Series D Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred stock dividend rate percentage				7.25%
Series E Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred stock dividend rate percentage				7.00%