Derivative Instruments - Outstanding Derivative Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Interest rate swap
Derivative [Line Items]
Aggregate Notional Amount	$ 490,483	$ 383,670
EZOP | Interest Rate Swap One
Derivative [Line Items]
Fixed Interest Rate	1.00%
Aggregate Notional Amount	$ 180,181	$ 130,373
EZOP | Interest Rate Swap One | Minimum
Derivative [Line Items]
Fixed Interest Rate		0.483%
EZOP | Interest Rate Swap One | Maximum
Derivative [Line Items]
Fixed Interest Rate		2.62%
TEPH | Interest Rate Swap Two
Derivative [Line Items]
Aggregate Notional Amount	$ 270,170	$ 202,272
TEPH | Interest Rate Swap Two | Minimum
Derivative [Line Items]
Fixed Interest Rate	0.121%	0.528%
TEPH | Interest Rate Swap Two | Maximum
Derivative [Line Items]
Fixed Interest Rate	2.534%	2.114%
TEPINV | Interest Rate Swap Three
Derivative [Line Items]
Fixed Interest Rate	2.50%	2.50%
Aggregate Notional Amount	$ 40,132	$ 51,025