Income Taxes Income Taxes (Details - Textuals) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Operating Loss Carryforwards [Line Items]
Tax carryforward amount	$ 371,100,000
Uncertain tax positions	0	0
Stock Option Exercise Tax Benefit
Operating Loss Carryforwards [Line Items]
Tax carryforward amount	$ 21,800,000