Derivative Liabilities - Contractor Option Activity) (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2019 $ / shares shares	Dec. 31, 2019 $ / shares shares	Dec. 31, 2018 $ / shares shares
Derivative Liabilities
Stock Options Issuance Outstanding at Beginning	0	0	19
Stock Options Issuance Exercised	(19)	(19)
Weighted- Average Exercised | $ / shares		$ 1.71
Stock Options Issuance Outstanding at Ending	0	0	0
Weighted Average Exercise Price Outstanding and Exercisable at Beginning | $ / shares	$ 0.00		$ 0.00
Weighted Average Exercise Price Outstanding and Exercisable at Ending | (per share)		$ 0.00	$ 0.00