ACCUMULATED OTHER COMPREHENSIVE INCOME (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Before-Tax
Net change	$ 3,961	$ (14,009)	$ 26,216	$ 2,056
Tax Effect
Net change	(3,615)	5,884	(12,987)	(863)
Net-of-Tax
Other comprehensive income (loss)	346	(8,125)	13,229	1,193
Available-for-Sale Investment Securities
Before-Tax
Net unrealized gains (losses) arising during the period	11,435	(8,455)	37,565	12,014
Net realized gains reclassified into net income	(2,836)	(5,554)	(6,678)	(9,958)
Net change	8,599	(14,009)	30,887	2,056
Tax Effect
Net unrealized gains (losses) arising during the period	(4,807)	3,551	(15,795)	(5,045)
Net realized gains reclassified into net income	1,192	2,333	2,808	4,182
Net change	(3,615)	5,884	(12,987)	(863)
Net-of-Tax
Net unrealized gains (losses) arising during the period	6,628	(4,904)	21,770	6,969
Net realized gains reclassified into net income	(1,644)	(3,221)	(3,870)	(5,776)
Other comprehensive income (loss)	4,984	(8,125)	17,900	1,193
Foreign Currency Translation Adjustments
Before-Tax
Net unrealized gains (losses) arising during the period	(4,638)	0	(4,671)	0
Net change	(4,638)	0	(4,671)	0
Tax Effect
Net unrealized gains (losses) arising during the period	0	0	0	0
Net change	0	0	0	0
Net-of-Tax
Net unrealized gains (losses) arising during the period	(4,638)	0	(4,671)	0
Net realized gains reclassified into net income	0		0
Other comprehensive income (loss)	$ (4,638)	$ 0	$ (4,671)	$ 0