STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Statement
Balance at beginning of period	$ (33,940)	$ (12,414)	$ 599
Period Change	38,609	(21,526)	(13,013)
Balance at end of period	4,669	(33,940)	(12,414)
Unrealized gain (loss) on investment securities available-for-sale
Statement
Balance at beginning of period	(34,848)	(13,927)	602
Period Change	39,491	(20,921)	(14,529)
Balance at end of period	4,643	(34,848)	(13,927)
Foreign exchange translation adjustment
Statement
Balance at beginning of period	900	1,664	(29)
Period Change	(900)	(764)	1,693
Balance at end of period		900	1,664
Unrealized gain (loss) on other asset investment
Statement
Balance at beginning of period	8	(151)	26
Period Change	18	159	(177)
Balance at end of period	$ 26	$ 8	$ (151)