Income Taxes (Detail Textuals 1) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013
Operating Loss Carryforwards [Line Items]
Federal research and experimentation tax credit carry-forwards expire prior to utilization	$ 8.8
Research credit carryforwards
Operating Loss Carryforwards [Line Items]
Federal and state net operating loss carry-forwards	15.6
Federal research and experimentation tax credit carry-forwards expire prior to utilization	15.6
Federal capital loss carryforwards
Operating Loss Carryforwards [Line Items]
Federal and state net operating loss carry-forwards	15.5
Federal research and experimentation tax credit carry-forwards expire prior to utilization	$ 15.5