Income Taxes (Details 3) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014
Additional disclosure of unrecognized tax benefits
U.S. income or foreign tax withholding	$ 0
Tax credit carryforwards amount in excess of state excess tax benefits under the "with-and-without" approach	0.1
U.S. Federal
Tax credit carryforwards
Tax credit carryforwards	3.5
State
Tax credit carryforwards
Tax credit carryforwards	$ 3.6