INCOME TAXES - Additional Information (Detail) (USD $)	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2013	Jun. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
Income Tax Contingency [Line Items]
Percentage of national gross tax receipt	1.00%
National gross receipt expense			$ 1,700,000		$ 4,300,000	$ 4,900,000
Percentage of gross receipt tax credit	0.50%
Gross income credit amount	700,000		800,000		2,100,000	2,500,000
Amount of additional surtax	25,000							750,000
Statutory rate	39.00%							30.00%
Valuation allowance	505,200,000				505,200,000		522,700,000
Percentage of alternative minimum tax	25.00%	30.00%						20.00%
NOL deduction limit	The NOL deduction is now limited to 90% of taxable income for regular income tax purposes and 80% for AMT purposes.
Percentage of dividend received deduction from controlled subsidiaries	100.00%
Percentage of dividend received from other taxable domestic corporations	85.00%
Income tax expense	64,000		3,676,000		675,000	4,319,000
Deferred Tax Assets Net	9,900,000				9,900,000		7,600,000
Deferred tax asset	525,400,000				525,400,000
Net operating loss and carryforwards associated to the deferred tax asset	373,600,000				373,600,000
New unrecognized Tax Benefits (UTBs)	0		5,476,000		0	5,476,000	4,310,000	2,374,000
Accrued interest related to UTB	1,400,000				1,400,000
Carry forward period is, extended for taxable income	12 years 0 months 0 days
Minimum percentage of bank net taxable income for paying Income tax at normal rate	20.00%
Net Operating Loss Carryforward Period	10 years 0 months 0 days
Threshold For Long Term Capital Treatment	1 year 0 months 0 days	0 years 6 months 0 days
Long Term Capital Gain Tax Rate	20.00%	15.00%
Capital Loss CarryOver Threshold	90.00%
Cumulative Loss Position Period	3 years 0 months 0 days
Changes In Statutory Tax Rate Net Benefit				500,000
NOL Carryforward Period Attributable To Capital Losses	7 years 0 months 0 days						5 years 0 months 0 days
Deferred Tax Liabilitiy Increases Decreases During Period					300,000
Siginificant Changes In Reserve For Uncertain Tax Positions					4,900,000
Decrease Increase In National Receipt Tax Amount	300,000
Equity Method Investments [Member]
Income Tax Contingency [Line Items]
Valuation Allowance Deferred Tax Asset Change In Amount					$ 100,000
Minimum [Member]
Income Tax Contingency [Line Items]
Percentage Of Additional Surtax	5.00%
Maximum [Member]
Income Tax Contingency [Line Items]
Percentage Of Additional Surtax	19.00%
Puerto Rico [Member]
Income Tax Contingency [Line Items]
Statute of limitations under income tax act	4 years 0 months 0 days
United States [Member]
Income Tax Contingency [Line Items]
Statute of limitations under income tax act	3 years 0 months 0 days
Virgin Islands [Member]
Income Tax Contingency [Line Items]
Statute of limitations under income tax act	3 years 0 months 0 days