Income Taxes (Details 3) (USD $)	Mar. 31, 2013
Operating loss and tax credit carryforwards
Net Operating Losses	$ 9,976,000
State | Hawaii
Operating loss and tax credit carryforwards
Tax credit carry forwards	6,070,000
Research and Experimentation Tax Credits
Operating loss and tax credit carryforwards
Tax credit carry forwards	11,000
Alternate minimum tax credit carry forwards
Operating loss and tax credit carryforwards
Tax credit carry forwards	146,000
Expires March 31, 2020
Operating loss and tax credit carryforwards
Net Operating Losses	0
Expires March 31, 2020 | Research and Experimentation Tax Credits
Operating loss and tax credit carryforwards
Tax credit carry forwards	7,000
Expires March 31, 2021
Operating loss and tax credit carryforwards
Net Operating Losses	126,000
Expires March 31, 2021 | Research and Experimentation Tax Credits
Operating loss and tax credit carryforwards
Tax credit carry forwards	2,000
Expires March 31, 2022
Operating loss and tax credit carryforwards
Net Operating Losses	3,161,000
Expires March 31, 2023
Operating loss and tax credit carryforwards
Net Operating Losses	1,864,000
Expires March 31, 2023 | Research and Experimentation Tax Credits
Operating loss and tax credit carryforwards
Tax credit carry forwards	1,000
Expires March 31, 2026
Operating loss and tax credit carryforwards
Net Operating Losses	159,000
Expires March 31, 2027
Operating loss and tax credit carryforwards
Net Operating Losses	2,665,000
Expires March 31, 2027 | Research and Experimentation Tax Credits
Operating loss and tax credit carryforwards
Tax credit carry forwards	1,000
Expires March 31, 2028
Operating loss and tax credit carryforwards
Net Operating Losses	1,612,000
Expires March 31, 2031
Operating loss and tax credit carryforwards
Net Operating Losses	$ 389,000