FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Derivative Liabilities
Reconciliation of the beginning and ending balances for major liability categories measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Beginning balance	$ (3,362)		$ (3,257)		$ (3,655)		$ (3,052)
Total gains or (losses) for the period:
Included in earnings	(64)	[1]	(254)	[1]	229	[1]	(459)	[1]
Ending balance	(3,426)		(3,511)		(3,426)		(3,511)
Changes in unrealized gains (losses) included in earnings relating to assets and liabilities held at the end of period	64		254		229		459
Corporate debt securities | Non-investment grade
Reconciliation of the beginning and ending balances for major asset categories measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Opening balance	7,917		5,517		6,371		4,800
Total gains or (losses) for the period:
Included in other comprehensive income (unrealized)	1,009	[1],[2]	619	[1],[2]	2,652	[1],[2]	1,406	[1],[2]
Purchases, issues, sales, settlements
Sales	0				0
Settlements	(17)		(4)		(114)		(74)
Closing balance	$ 8,909		$ 6,132		$ 8,909		$ 6,132

[1] Total gains or losses represent the total realized and unrealized gains and losses recorded for Level 3 assets and liabilities. Realized gains or losses are included in net gains on sale of investment securities in the consolidated statements of income.

[2] Unrealized gains or losses on investment securities are reported in other comprehensive income (loss), net of tax, in the consolidated statements of comprehensive income.