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Share-based Compensation – Restricted Stock Units (Details) - RSUs outstanding - shares				12 Months Ended
	Mar. 01, 2018	Oct. 02, 2017	May 01, 2017	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	93,750	6,250	78,750		93,750
Shares vested				21,251	33,748
Shares converted				20,328
Shares withheld for tax obligation				923
Four equal tranches
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years	4 years	4 years