Organization and Summary of Significant Accounting Policies - Impact of Corrections on Face Statements (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2019	Mar. 31, 2018	Sep. 30, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cash and cash equivalents	$ 347,786		$ 159,216		$ 347,786	$ 159,216	$ 285,311
Pawn service charges receivable, net	27,097		24,130		27,097	24,130	30,959
Prepaid expenses and other current assets	32,984		29,533		32,984	29,533	33,456
Goodwill	296,881		290,884		296,881	290,884	299,248
Deferred tax asset, net	10,119		15,087		10,119	15,087	7,986
Accounts payable, accrued expenses and other current liabilities	58,696		60,538		58,696	60,538	57,958
Retained earnings	386,650		373,560		386,650	373,560	386,622
Accumulated other comprehensive loss	(49,950)		(40,247)		(49,950)	(40,247)	(42,356)
Pawn service charges			74,031			150,053
Operations expense	88,243		82,180		177,029	165,826
Administrative expense	16,487		13,341		31,742	26,420
Loss from continuing operations before income taxes	5,019		17,504		278	37,161
Income tax expense	2,360		5,797		1,279	13,208
Loss from continuing operations, net of tax	$ 2,659		$ 11,707		$ (1,001)	$ 23,953
Basic earnings per share attributable to EZCORP, Inc. — continuing operations (usd per share)	$ 0.06		$ 0.22		$ 0	$ 0.46
Diluted earnings per share attributable to EZCORP, Inc. — continuing operations (usd per share)	$ 0.06		$ 0.21		$ 0	$ 0.44
Net income (loss)	$ 2,641	$ (3,843)	$ 11,207	$ 12,024	$ (1,202)	$ 23,231
Service charges and fees receivable					3,797	4,644
Accounts payable, accrued expenses and other liabilities					(409)	(5,357)
Income taxes, net of excess tax benefit from stock compensation					(3,176)	3,937
Net cash provided by operating activities					50,623	45,644
Effect of exchange rate changes on cash and cash equivalents and restricted cash					$ (599)	(238)
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cash and cash equivalents			159,912			159,912	286,015
Pawn service charges receivable, net			30,493			30,493	38,318
Prepaid expenses and other current assets			29,222			29,222	33,154
Goodwill			289,438			289,438	297,448
Deferred tax asset, net			13,842			13,842	7,165
Accounts payable, accrued expenses and other current liabilities			60,689			60,689	57,800
Retained earnings			377,682			377,682	392,180
Accumulated other comprehensive loss			(40,463)			(40,463)	(42,616)
Pawn service charges			74,367			150,727
Operations expense			82,160			165,770
Administrative expense						26,659
Loss from continuing operations before income taxes			17,860			37,652
Income tax expense			5,921			13,358
Loss from continuing operations, net of tax			$ 11,939			$ 24,294
Basic earnings per share attributable to EZCORP, Inc. — continuing operations (usd per share)			$ 0.23			$ 0.46
Diluted earnings per share attributable to EZCORP, Inc. — continuing operations (usd per share)			$ 0.21			$ 0.45
Net income (loss)						$ 23,572
Service charges and fees receivable						3,964
Accounts payable, accrued expenses and other liabilities						(5,006)
Income taxes, net of excess tax benefit from stock compensation						4,085
Net cash provided by operating activities						45,804
Effect of exchange rate changes on cash and cash equivalents and restricted cash						(227)
Corrections
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cash and cash equivalents			$ (696)			(696)	(704)
Pawn service charges receivable, net			(6,363)			(6,363)	(7,359)
Prepaid expenses and other current assets			311			311	302
Goodwill			1,446			1,446	1,800
Deferred tax asset, net			1,245			1,245	821
Accounts payable, accrued expenses and other current liabilities			(151)			(151)	158
Retained earnings			(4,122)			(4,122)	(5,558)
Accumulated other comprehensive loss			216			216	$ 260
Pawn service charges			(336)			(674)
Operations expense			20			56
Administrative expense						(239)
Loss from continuing operations before income taxes			(356)			(491)
Income tax expense			(124)			(150)
Loss from continuing operations, net of tax			$ (232)			$ (341)
Basic earnings per share attributable to EZCORP, Inc. — continuing operations (usd per share)			$ (0.01)			$ 0
Diluted earnings per share attributable to EZCORP, Inc. — continuing operations (usd per share)			$ 0			$ (0.01)
Net income (loss)						$ (341)
Service charges and fees receivable						680
Accounts payable, accrued expenses and other liabilities						(351)
Income taxes, net of excess tax benefit from stock compensation						(148)
Net cash provided by operating activities						(160)
Effect of exchange rate changes on cash and cash equivalents and restricted cash						$ (11)