STOCKHOLDERS' EQUITY - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2016	Jun. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2018	May 10, 2017	Feb. 07, 2017
Class Of Stock [Line Items]
Common stock, shares authorized	2,000,000,000		2,000,000,000
Common stock, par value	$ 0.1		$ 0.1
Common stock, shares issued	218,700,394		219,928,329
Common stock, shares outstanding	217,446,205		215,963,916
Granted shares of restricted stock			954,976
Corporation has authorized shares of preferred stock	50,000,000		50,000,000
Preferred stock, par value			$ 1
Stock repurchase plan treasury stock	1,254,189		3,964,413
Legal surplus reserve rate			10.00%
Original amount contributed in percentage			20.00%
Repurchased of common stock			326,653	186,703
Liquidation value per share			$ 25
Legal surplus reserve amount	$ 52,436		$ 52,436
Secondary Offering Of Common Stock							20,000,000
Conversion Of Stock Shares Issued1		852,831
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number	4,178,791		1,834,152
Trust Preferred Securities Exchanged Liquidation Value		$ 5,300
Legal Surplus Amount Additions	$ 9,600
Purchase Of Common Stock Secondary Offering							3,000,000
Secondary Offering of Common Stock And Additional Shares Purchased							23,000,000
Omnibus Plan [Member]
Class Of Stock [Line Items]
Restricted stock available for issuance			7,984,812
Restricted Stock [Member]
Class Of Stock [Line Items]
Repurchased of common stock			235,680	51,754
First Fifty Percentage Restricted Stock Nonvest Awards [Member]
Class Of Stock [Line Items]
Percentage of restricted stock lapse					50.00%
Other Fifty Percentage Restricted Stock Nonvest Awards [Member]
Class Of Stock [Line Items]
Percentage of restricted stock lapse					50.00%
Thomas H Lee Partners [Member]
Class Of Stock [Line Items]
Percentage Of Stock Ownership			9.30%
Secondary Offering Of Common Stock							10,000,000
Oaktree Capital Management [Member]
Class Of Stock [Line Items]
Percentage Of Stock Ownership			9.30%
Secondary Offering Of Common Stock							10,000,000
Department Of Treasury [Member]
Class Of Stock [Line Items]
Secondary Offering Of Common Stock						10,291,553
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%