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Accrued maintenance liability (Tables)

12 Months Ended

Dec. 31, 2020

Accrued Maintenance Liability [Abstract]

Schedule of movements in accrued maintenance liability

Movements in accrued maintenance liability during the years ended December 31, 2020 and 2019 were as follows:

			Year Ended December 31,
			2020						2019
Accrued maintenance liability at beginning of period			$	2,190,159					$	2,237,494
Maintenance payments received			345,699						736,423
Maintenance payments returned			(412,492)						(352,032)
Release to income upon sale			(95,042)						(249,187)
Release to income other than upon sale			(344,210)						(207,849)
Lessor contribution, top ups and other			66,281						25,310
Accrued maintenance liability at end of period			$	1,750,395					$	2,190,159

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Accrued Maintenance Liability [Abstract]

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Schedule Of Movements In Accrued Maintenance Liability [Table Text Block]

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