MINIMUM REGULATORY CAPITAL REQUIREMENTS (Details)1	Dec. 31, 2015
High volatility commercial real estate acquisition, development and construction loans and non-residential mortgage loans that are 90 days past due or on non-accrual status | Basel I
Minimum regulatory capital requirements
Risk weighting (as a percent)	100.00%
High volatility commercial real estate acquisition, development and construction loans and non-residential mortgage loans that are 90 days past due or on non-accrual status | Basel III
Minimum regulatory capital requirements
Risk weighting (as a percent)	150.00%
Credit conversion factor for the unused portion of commitments with maturities of less than one year that are not cancellable | Basel I
Minimum regulatory capital requirements
Risk weighting (as a percent)	0.00%
Credit conversion factor for the unused portion of commitments with maturities of less than one year that are not cancellable | Basel III
Minimum regulatory capital requirements
Risk weighting (as a percent)	20.00%
Mortgage servicing rights and deferred tax assets that are not deducted from capital | Basel I
Minimum regulatory capital requirements
Risk weighting (as a percent)	100.00%
Mortgage servicing rights and deferred tax assets that are not deducted from capital | Basel III
Minimum regulatory capital requirements
Risk weighting (as a percent)	250.00%
Risk weight for equity exposures | Basel I
Minimum regulatory capital requirements
Risk weighting (as a percent)	0.00%
Risk weight for equity exposures | Basel III
Minimum regulatory capital requirements
Risk weighting (as a percent)	600.00%