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Sheet Lessee, Operating Lease, Balance Sheet Presentation [Table Text Block] Lessee, Operating Lease, Balance Sheet Presentation [Table Text Block] Preferred stock, shares issued Preferred Stock, Shares Issued City Area Code City Area Code Adjustments to reconcile net loss to net cash used in operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Loss on sale of NOLs Loss On Sale Of Net Operating Losses Loss On Sale Of Net Operating Losses Subsequent Event Type [Axis] Subsequent Event Type [Axis] Entity Address, City or Town Entity Address, City or Town Stockholders' Equity Stockholders' Equity Attributable to Parent [Abstract] Options, Vested and expected to vest, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term