Stockholders' Equity (Series D Convertible Preferred Stock) (Details) - Series D Preferred Stock - $ / shares	Sep. 30, 2016	Jun. 30, 2016	Mar. 24, 2016
Class of Stock [Line Items]
Preferred stock, shares issued (in shares)	110	0	110
Preferred stock, par value (in dollars per share)	$ 1,000	$ 1,000	$ 1,000
Convertible preferred stock, shares issued upon conversion (in shares)			3,333
Beneficial ownership interest percentage threshold			9.99%