DISCLOSURES REGARDING FAIR VALUES OF FINANCIAL INSTRUMENTS - Securities in Unrealized Loss Position (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Continuous unrealized loss position, fair value [Abstract]
One year or greater	$ 666,397	$ 39,030
Less than one year	1,020,846	2,857,724
Continuous unrealized loss position, Fair Value, Total	1,687,243	2,896,754
Continuous unrealized loss position, aggregate loss [Abstract]
One year or greater	6,537	380
Less than one year	4,208	17,012
Unrealized Losses, Total	$ 10,745	$ 17,392