TWO Quarterly report pursuant to Section 13 or 15(d)

Equity Incentive Plan (Details)

Equity Incentive Plan (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted common shares reserved for issuance under equity incentive plan (in shares)	6,500,000		6,500,000
Number of restricted common shares granted during period under equity incentive plan (in shares)			855,712	515,282
Weighted average grant date fair value of restricted common shares granted during period under equity incentive plan (in usd per share)			$ 13.16	$ 14.28
Compensation costs related to restricted common stock	$ 2.9	$ 2.2	$ 7.5	$ 6.5
Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted common shares granted during period under equity incentive plan (in shares)			168,942	60,108
Weighted average grant date fair value of restricted common shares granted during period under equity incentive plan (in usd per share)			$ 4.75	$ 13.35
Award vesting period of restricted common shares granted during period under equity incentive plan			1 year
Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted common shares granted during period under equity incentive plan (in shares)			686,770	455,174
Weighted average grant date fair value of restricted common shares granted during period under equity incentive plan (in usd per share)			$ 15.23	$ 14.40
Award vesting period of restricted common shares granted during period under equity incentive plan			3 years