Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Sep. 29, 2015
Summary of Investment Holdings [Line Items]
Stock dividend paid to company stockholders			5.00%
Fair market value of embedded derivatives at the midpoint of the inputs	$ 134,348	$ 144,042
Minimum [Member]
Summary of Investment Holdings [Line Items]
Fair market value of embedded derivatives at the midpoint of the inputs	133,267	143,422
Maximum [Member]
Summary of Investment Holdings [Line Items]
Fair market value of embedded derivatives at the midpoint of the inputs	$ 135,403	$ 144,660