STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE (Details 4) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 5,430	$ (2,535)	$ 4,237	$ (30,459)
Net unrealized gains (losses) arising during the period	6,281	1,565	13,250	31,861
Amounts reclassified from accumulated other comprehensive income	(9,881)	(1,458)	(15,657)	(3,830)
Changes, net of taxes	(3,600)	107	(2,407)	28,031
Ending balance	1,830	(2,428)	1,830	(2,428)
Available-for-Sale Investment Securities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	5,430	(2,535)	4,237	(30,459)
Net unrealized gains (losses) arising during the period	13,127	1,565	20,096	31,861
Amounts reclassified from accumulated other comprehensive income	(9,881)	(1,458)	(15,657)	(3,830)
Changes, net of taxes	3,246	107	4,439	28,031
Ending balance	8,676	$ (2,428)	8,676	$ (2,428)
Foreign Currency Translation Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	0		0
Net unrealized gains (losses) arising during the period	(6,846)		(6,846)
Amounts reclassified from accumulated other comprehensive income	0		0
Changes, net of taxes	(6,846)		(6,846)
Ending balance	$ (6,846)		$ (6,846)