Share Based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Options (in shares)
Outstanding, beginning of period	12,143	12,143	12,143
Forfeited / Expired	(1,817)
Outstanding, end of period	10,326	12,143	12,143	12,143
Exercisable options at end of period	10,326	12,143	12,143
Weighted Average Exercise Price Per Share
Outstanding, beginning of period (in usd per share)	$ 215.59	$ 215.59	$ 215.59
Forfeited / Expired (in usd per share)	197.16
Outstanding, end of period (in usd per share)	218.83	215.59	215.59	$ 215.59
Exercisable at end of period (in usd per share)	$ 218.83	$ 215.59	$ 215.59
Weighted Average Contractual Life (Years)
Outstanding, weighted average contractual life (in years)	1 year 4 months 24 days	2 years 3 months 18 days	3 years 3 months 18 days	4 years 6 months
Exercisable, weighted average contractual life (in years)	1 year 4 months 24 days	2 years 3 months 18 days	3 years 3 months 18 days
Intrinsic Value (Thousands)
Outstanding	$ 0	$ 0	$ 0	$ 0
Exercisable	$ 0	$ 0	$ 0