Share Based Compensation, 401(k) Plan and Deferred Compensation - Option Activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Option activity
Outstanding at beginning of year, shares	2,684,795
Exercised, shares	(10,728)
Forfeited/Expired, shares	(50,000)
Outstanding at end of year, shares	2,624,067	2,684,795
Vested/Exercisable at end of year, shares	2,624,067
Outstanding at beginning of year, Weighted Average Exercise Price	$ 15.55
Exercised, Weighted Average Exercise Price	11.89
Forfeited/Expired, Weighted Average Exercise Price	20.61
Outstanding at end of year, Weighted Average Exercise Price	15.47	$ 15.55
Vested/Exercisable at end of period, Weighted Average Exercise Price	$ 15.47
Weighted Average Remaining Contractual Term (in years)	3 years 1 month 13 days	4 years 1 month 6 days
Vested/Exercisable at end of period, Weighted Average Remaining Contractual Term (in years)	3 years 1 month 13 days
Exercised, Aggregated Intrinsic Value	$ 18,989
Outstanding at end of year, Aggregate Intrinsic Value	0
Vested/Exercisable at end of year, Aggregate Intrinsic Value	$ 0