Stock-Based Compensation - Summary of Stock Options Outstanding and Exercisable by Stock Option Plan (Details) - $ / shares	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014
Outstanding Stock Options, Number of Options Outstanding	111,078	326,424	13,188	13,396
Outstanding Stock Options, Weighted Average Exercise Price	$ 19.60	$ 24.90	$ 300.72	$ 303.36
Exercisable Stock Options Exercisable, Number of Options Exercisable	110,869		11,139
Exercisable Stock Options Exercisable, Weighted Average Exercise Price	$ 19.57		$ 349.56
2004 Plan [Member]
Outstanding Stock Options, Number of Options Outstanding	5,042
Outstanding Stock Options, Weighted Average Exercise Price	$ 64.28
Exercisable Stock Options Exercisable, Number of Options Exercisable	5,042
Exercisable Stock Options Exercisable, Weighted Average Exercise Price	$ 64.28
2004 Director's Plan [Member]
Outstanding Stock Options, Number of Options Outstanding	1,390
Outstanding Stock Options, Weighted Average Exercise Price	$ 629.52
Exercisable Stock Options Exercisable, Number of Options Exercisable	1,390
Exercisable Stock Options Exercisable, Weighted Average Exercise Price	$ 629.52
2013 Plan [Member]
Outstanding Stock Options, Number of Options Outstanding	417
Outstanding Stock Options, Weighted Average Exercise Price	$ 35.88
Exercisable Stock Options Exercisable, Number of Options Exercisable	208
Exercisable Stock Options Exercisable, Weighted Average Exercise Price	$ 35.88
Replacement Stock Options [Member]
Outstanding Stock Options, Number of Options Outstanding	104,229
Outstanding Stock Options, Weighted Average Exercise Price	$ 9.24
Exercisable Stock Options Exercisable, Number of Options Exercisable	104,229
Exercisable Stock Options Exercisable, Weighted Average Exercise Price	$ 9.33