Shareholders' Equity - Restricted Stock (Details) - Restricted shares $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($) installment shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares \| shares	2,785,000
Fair Value \| $	$ 9,204
January 10, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares \| shares	2,295,000
Fair Value \| $	$ 7,436
Number of vesting installments \| installment	4
January 25, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares \| shares	30,000
Fair Value \| $	$ 86
Number of vesting installments \| installment	4
April 22, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares \| shares	250,000
Fair Value \| $	$ 945
Number of vesting installments \| installment	2
June 13, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares \| shares	210,000
Fair Value \| $	$ 737
Number of vesting installments \| installment	2