Intangible assets (Tables)

6 Months Ended

Jun. 30, 2021

Intangible assets [Abstract]

Composition of Intangible Assets

The following table summarizes the composition of intangible assets as of June 30, 2021 and December 31, 2020:

	June 30, 2021
	Gross Carrying Amount		Accumulated Amortization			Currency Translation Adjustment			Net Carrying Amount		Weighted Average Life
Definite-lived intangible assets
Favorable vessel charter contracts	$	120,000	$	(8,625	)	$	-		$	111,375		3
Permits and development rights		92,918		(3,202	)		(3,720	)		85,996		32
Acquired power purchase agreements		16,585		-			9,133			25,718		17
Easements		1,559		(216	)		-			1,343		30
Indefinite-lived intangible assets
Easements		1,191		-			45			1,236		n/a
Total intangible assets	$	232,253	$	(12,043	)	$	5,458		$	225,668

	December 31, 2020
	Gross Carrying Amount		Accumulated Amortization			Currency Translation Adjustments		Net Carrying Amount		Weighted Average Life
Definite-lived intangible assets
Permits	$	42,441	$	(2,438	)	$	3,456	$	43,459		40
Easements		1,559		(190	)		-		1,369		30
Indefinite-lived intangible assets
Easements		1,191		-			83		1,274		n/a
Total intangible assets	$	45,191	$	(2,628	)	$	3,539	$	46,102