SHORT-TERM BORROWINGS (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
SHORT-TERM BORROWINGS
Interest expense on short-term borrowings		$ 204,000	$ 1,177,000
Amount outstanding at the end of the period		34,000
Securities sold under agreements to repurchase
SHORT-TERM BORROWINGS
Average amount outstanding during year			52,214,000
Highest month-end balance during year			236,669,000
Weighted average interest rate during year (as a percent)			0.21%
Securities sold under agreements to repurchase | Maximum
SHORT-TERM BORROWINGS
Period of contractual maturity of securities to treat them as financings	365 days
Federal Reserve discount window line of credit | Central Pacific Bank
SHORT-TERM BORROWINGS
Additional unused borrowings available	24,900,000	31,000,000
Commercial real estate and commercial loans pledged as collateral	41,700,000	52,400,000
Other short-term borrowings
SHORT-TERM BORROWINGS
Amount outstanding at the end of the period		34,000	202,480,000
Average amount outstanding during year	11,000	35,809,000	167,608,000
Highest month-end balance during year		$ 201,962,000	$ 202,480,000
Weighted average interest rate on balances outstanding at the end of the period (as a percent)	0.00%	0.00%	0.58%
Weighted average interest rate during year (as a percent)	0.70%	0.57%	0.64%