Supplemental Consolidated Financial Information and Discontinued Operations - Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues												$ 45,256
Consumer loan bad debt												(30,081)
Operations expense												(111,984)
Interest expense, net												(16,464)
Depreciation, amortization and other expenses												(12,732)
Gain on disposition												34,237
Loss from discontinued operations before income taxes of Grupo Finmart												(91,768)
Income tax benefit												12,896
Loss from discontinued operations, net of tax of operations discontinued prior to the adoption of ASU 2014-08												(560)
Loss from discontinued operations, net of tax	$ (225)	$ 91	$ (500)	$ (222)	$ 43	$ (265)	$ (375)	$ (1,228)		$ (856)	$ (1,825)	(79,432)
Loss from discontinued operations, net of tax of Grupo Finmart attributable to EZCORP, Inc.										(856)	(1,825)	(72,771)
Goodwill impairment										$ 0	$ 0	73,244
Grupo Finmart
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations, net of tax												(78,872)
Loss from discontinued operations, net of tax of Grupo Finmart attributable to noncontrolling interest												6,661
Loss from discontinued operations, net of tax of Grupo Finmart attributable to EZCORP, Inc.												(72,211)
Cash flows from operating activities, discontinued operations												2,200
Cash flows from investing activities, discontinued operations												42,700
Goodwill impairment									$ 73,200
Excluding of Grupo Finmart
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues												$ 2,100