Stockholders' Equity and Compensation Arrangements Performance Share Units (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance Share Units, Shares Issuable Upon Vesting	$ 503,735
Performance Share Units, Weighted Average Grant Date Fair Value	$ 4.01	$ 3.78
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	67,455,159
Performance Share Units, Maximum Number of Shares Issuable Upon Vesting	$ 2,505,346		$ 778,092
Performance Share Units, Total Grant Date Fair Value, Conditions Met	$ 5,000,000