Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Schedule of Gain Loss on Sale of Leasing Equipment [Line Items]

Schedule of Gain Loss on Sale of Leasing Equipment [Table Text Block]

During the years ended December 31, 2017, 2016, and 2015, the Company recorded the following net gains or losses on sale of leasing equipment held for sale on the consolidated statements of operations (in thousands):

	Year Ended December 31, 2017		Year Ended December 31, 2016			Year Ended December 31, 2015
Impairment reversal (loss) on equipment held for sale	$	3	$	(19,399	)	$	—
Gain (loss) on sale of equipment-net of selling costs	35,809		(948		)	2,013
Net gain (loss) on sale of leasing equipment	$	35,812	$	(20,347	)	$	2,013

Schedule of estimated useful lives and residual values for the majority of the Company's leasing equipment

	As of December 31, 2017			As of December 31, 2016
Equipment Type	Depreciable Life	Residual Value		Depreciable Life	Residual Value
Dry containers
20-foot dry container	13 years	$	1,000	13 years	$	1,000
40-foot dry container	13 years	$	1,200	13 years	$	1,200
40-foot high cube dry container	13 years	$	1,400	13 years	$	1,400
Refrigerated containers
20-foot refrigerated container	12 years	$2,250 to $2,500		12 years	$2,250 to $2,500
40-foot high cube refrigerated container	12 years	$3,250 to $3,500		12 years	$3,250 to $3,500
Special containers
40-foot flat rack container	12 to 14 years	$1,500 to $3,000		12 to 14 years	$1,500 to $3,000
40-foot open top container	12 to 14 years	$2,300 to $2,500		12 to 14 years	$2,300 to $2,500
Tank containers	20 years	$	3,000	20 years	$	3,000
Chassis	20 years	$	1,200	20 years	$	1,200

	As of December 31, 2017
Equipment Type	Minimum Depreciable Life	Maximum Depreciable Life	Minimum Residual Value	Maximum Residual Value
Refrigerated containers
20-foot refrigerated container			$2,250	$	2,500
40-foot high cube refrigerated container			$3,250	$	3,500
Special containers
40-foot flat rack container	12 years	14 years	$1,500	$	3,000
40-foot open top container	12 years	14 years	$2,300	$	2,500

	As of December 31, 2016
Equipment Type	Minimum Depreciable Life	Maximum Depreciable Life	Minimum Residual Value	Maximum Residual Value
Refrigerated containers
20-foot refrigerated container			$2,250	$	2,500
40-foot high cube refrigerated container			$3,250	$	3,500
Special containers
40-foot flat rack container	12 years	14 years	$1,500	$	3,000
40-foot open top container	12 years	14 years	$2,300	$	2,500

Schedule of net book value of the Company's leasing equipment by equipment type

The net book value of the Company's leasing equipment by equipment type as of the dates indicated was (in thousands):

	December 31, 2017		December 31, 2016
Dry container units	$	5,941,097	$	4,839,648
Refrigerated container units	1,897,385		2,037,952
Special container units	287,869		265,666
Tank container units	105,821		107,933
Chassis	132,312		119,320
Total	$	8,364,484	$	7,370,519

Schedule of fair value, which was measured using Level 2 inputs, and the carrying value of the Company's debt

	December 31, 2017		December 31, 2016
Liabilities
Total Debt(1) - carrying value	$	6,979,877	$	6,415,664
Total Debt - fair value	$	6,991,537	$	6,316,229

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(1) Excludes unamortized debt costs of $40.6 million and $20.0 million as of December 31, 2017 and 2016, respectively, and purchase price debt adjustments of $27.5 million and $42.2 million as of December 31, 2017 and 2016, respectively.