Subsequent Events	6 Months Ended
Jun. 30, 2011
Subsequent Events [Abstract]
Subsequent Events	(11) Subsequent Events: On August 5, 2011, the Company renewed certain of its revolving credit facilities that had an aggregate commitment of $325 million. The renewed facilities have an aggregate commitment of $355 million, which consists of a $230 million facility and $125 million facility for A&B and Matson, respectively. The renewed facilities expire in August 2016. Amounts drawn under the facilities bear interest at London Interbank Offered Rate (“LIBOR”) plus a margin based on a ratio of debt to earnings before interest, taxes, depreciation and amortization pricing grid. The agreement contains certain restrictive covenants, the most significant of which requires the maintenance of minimum shareholders' equity levels, minimum property investment values, and a maximum ratio of debt to earnings before interest, depreciation, amortization and taxes. Additionally, on August 5, 2011, in connection with the renewal of the Company's revolving credit facilities, Matson terminated its Senior Secured Reducing Revolving Credit Facility (the “DnB Facility”) with DnB NOR, which had been entered into on June 28, 2005 and was scheduled to mature on June 28, 2015. The DnB Facility was terminated prior to its maturity because DnB NOR is a participant in the Company's renewed credit facilities. The available capacity under the DnB Facility at termination was $52.5 million and no amounts were outstanding under the facility prior to termination. In conjunction with the termination of the DnB Facility, DnB NOR released the mortgage on the MV Maunalei. On August 8, 2011, the Company finalized a decision to terminate Matson's second China string (“CLX2”), effective August 21, 2011, due to the longer-term outlook for sustained high fuel prices and increasingly volatile Transpacific rates. Three of the five vessels chartered for CLX2 will be returned in the third quarter of 2011 when their charter terms end. Matson intends to sub-charter the remaining two vessels until July 2012 when such charter obligations terminate. Excess containers available due to the termination of CLX2 will be used in other services, returned to leasing companies or sold. Matson will also close an office in China and terminate the majority of employees hired for the service. These actions are expected to be substantially completed during 2011; however, the return of leased containers is expected to occur over a period of 12 to 18 months. In connection with the discontinuation of CLX2 operations, Matson expects to recognize after-tax losses for the service that are expected to total approximately $20 million to $25 million. The majority of these costs is expected to be recognized in the third quarter of 2011 and are related to the final voyages and exit activities for the CLX2 service.

(11) Subsequent Events:

On August 5, 2011, the Company renewed certain of its revolving credit facilities that had an aggregate commitment of $325 million. The renewed facilities have an aggregate commitment of $355 million, which consists of a $230 million facility and $125 million facility for A&B and Matson, respectively. The renewed facilities expire in August 2016. Amounts drawn under the facilities bear interest at London Interbank Offered Rate (“LIBOR”) plus a margin based on a ratio of debt to earnings before interest, taxes, depreciation and amortization pricing grid. The agreement contains certain restrictive covenants, the most significant of which requires the maintenance of minimum shareholders' equity levels, minimum property investment values, and a maximum ratio of debt to earnings before interest, depreciation, amortization and taxes. Additionally, on August 5, 2011, in connection with the renewal of the Company's revolving credit facilities, Matson terminated its Senior Secured Reducing Revolving Credit Facility (the “DnB Facility”) with DnB NOR, which had been entered into on June 28, 2005 and was scheduled to mature on June 28, 2015. The DnB Facility was terminated prior to its maturity because DnB NOR is a participant in the Company's renewed credit facilities. The available capacity under the DnB Facility at termination was $52.5 million and no amounts were outstanding under the facility prior to termination. In conjunction with the termination of the DnB Facility, DnB NOR released the mortgage on the MV Maunalei.

On August 8, 2011, the Company finalized a decision to terminate Matson's second China string (“CLX2”), effective August 21, 2011, due to the longer-term outlook for sustained high fuel prices and increasingly volatile Transpacific rates. Three of the five vessels chartered for CLX2 will be returned in the third quarter of 2011 when their charter terms end. Matson intends to sub-charter the remaining two vessels until July 2012 when such charter obligations terminate. Excess containers available due to the termination of CLX2 will be used in other services, returned to leasing companies or sold. Matson will also close an office in China and terminate the majority of employees hired for the service. These actions are expected to be substantially completed during 2011; however, the return of leased containers is expected to occur over a period of 12 to 18 months.

In connection with the discontinuation of CLX2 operations, Matson expects to recognize after-tax losses for the service that are expected to total approximately $20 million to $25 million. The majority of these costs is expected to be recognized in the third quarter of 2011 and are related to the final voyages and exit activities for the CLX2 service.