Share Based Compensation, 401(k) Plan and Deferred Compensation - Option Activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Option activity
Outstanding at beginning of year, shares	2,238,590
Exercised, shares	0
Forfeited/Expired, shares	(1,274,231)
Outstanding at end of year, shares	964,359	2,238,590
Vested/Exercisable at end of year, shares	964,359
Outstanding at beginning of year, Weighted Average Exercise Price	$ 15.67
Exercised, Weighted Average Exercise Price	0
Forfeited/Expired, Weighted Average Exercise Price	20.61
Outstanding at end of year, Weighted Average Exercise Price	9.13	$ 15.67
Vested/Exercisable at end of period, Weighted Average Exercise Price	$ 9.13
Weighted Average Remaining Contractual Term (in years)	1 year 3 months	1 year 1 month 6 days
Vested/Exercisable at end of period, Weighted Average Remaining Contractual Term (in years)	1 year 3 months
Exercised, Aggregated Intrinsic Value	$ 0
Outstanding at end of year, Aggregate Intrinsic Value	3,652,903
Vested/Exercisable at end of year, Aggregate Intrinsic Value	$ 3,652,903