Property, Plant and Equipment (Rail Group Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Components of Railcar assets leased to others
Rail Group assets leased to others, gross	$ 740,809	$ 723,004	$ 660,747
Less: accumulated depreciation	143,740	138,706	123,118
Railcar assets leased to others, net	$ 597,069	$ 584,298	$ 537,629

The amount of accumulated depreciation, by major property class, recorded on property subject to or available for lease as of the balance sheet date.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
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- Definition

Amount before accumulated depreciation of physical assets used in the normal conduct of business to produce goods and services subject to or available for lease.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 4
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- Definition

The amount of property, by major property class, net of accumulated depreciation, subject to or available for lease as of the balance sheet date.

+ References

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- References

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