Stock-Based Compensation - Stock Option Activity (Details) - $ / shares	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Options
Options, beginning balance (in shares)	682,950
Options, granted (in shares)	0	0
Options, exercised (in shares)	0
Options, forfeited/expired (in shares)	0
Options, ending balance (in shares)	682,950.00
Options, exercisable (in shares)	682,950
Weighted Average Exercise Price
Weighted average exercise price, beginning balance (in dollars per share)	$ 12.74
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)	12.74
Weighted-average exercise price, exercisable (in dollars per share)	$ 12.74