Deferred Income (Details Narrative) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Deferred Income
Deferred gain	$ 9,315	$ 9,468

Represents amount related to deffered gain on sale of property.

No definition available.

Name:	tci_DeferredGainOnSaleOfProperty1
Namespace Prefix:	tci_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant