Intangibles and goodwill (Tables)

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill [Table Text Block]

(in thousands of U.S. dollars)	Above market time charter		Option for time charter extension		Total intangibles		Goodwill		Total
Historical cost December 31, 2016	$	11,000		8,000		19,000		251	$	19,251
Accumulated amortization, December 31, 2016		(3,010)		—		(3,010)		—		(3,010)
Intangibles and goodwill, December 31, 2016		7,990		8,000		15,990		251		16,241
Additions (note 4)		11,760		—		11,760		—		11,760
Historical cost September 30, 2017		22,760		8,000		30,760		251		31,011
Amortization for the period		(2,716)		—		(2,716)		—		(2,716)
Accumulated amortization, September 30, 2017		(5,726)		—		(5,726)		—		(5,726)
Intangibles and goodwill, September 30, 2017	$	17,034		8,000		25,034		251	$	25,285

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

The following table presents estimated future amortization expense for the intangibles.

	Total
October - December, 2017	$	915
2018		3,631
2019		3,631
2020		3,053
2021		2,755
2022		2,755
2023 and thereafter	$	8,294