Stock-Based Compensation - Stock Option Activity (Details) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Options
Options, beginning balance (in shares)	33,458
Options, granted (in shares)	0	0
Options, exercised (in shares)	0
Options, forfeited/expired (in shares)	0
Options, ending balance (in shares)	33,458.000
Options, exercisable (in shares)	33,458
Weighted Average Exercise Price
Weighted average exercise price, beginning balance (in dollars per share)	$ 254.80
Weighted average exercise price, granted (in dollars per share)	0.00
Weighted average exercise price, exercised (in dollars per share)	0.00
Weighted average exercise price, forfeited/expired (in dollars per share)	0.00
Weighted average exercise price, ending balance (in dollars per share)	254.80
Weighted-average exercise price, exercisable (in dollars per share)	$ 254.80