EARNINGS PER COMMON SHARE - Calculations of Earnings Per Common Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net Income (Loss):
Net income (loss)	$ 25,646	$ 17,083
Excess of carrying amount of preferred stock exchanged over fair value of new common stock	0	379
Net income (loss) attributable to common stockholders	25,646	17,462
Weighted-Average Shares:
Basic weighted-average common shares outstanding	210,686	205,732
Average potential common shares	2,060	1,144
Diluted weighted-average number of common shares outstanding	212,746	206,876
Income (loss) per common share:
Basic	$ 0.12	$ 0.08
Diluted	$ 0.12	$ 0.08
Retained Earnings [Member]
Net Income (Loss):
Net income (loss)	25,646	17,083
Excess of carrying amount of preferred stock exchanged over fair value of new common stock	$ 0	$ 379