Summary of Significant Accounting Policies - Corrections and Reclassifications to Prior Period Financial Statements (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended								12 Months Ended
	Oct. 01, 2016	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Overstatement of prior retained earnings	$ 3,400
Cash and cash equivalents		$ 157,567				$ 285,311			$ 112,957	$ 157,567	$ 285,311
Pawn service charges receivable, net		31,802			$ 31,558	30,959			28,104	31,802	30,959
Prepaid expenses and other current assets		30,796			31,483	33,456			26,394	30,796	33,456
Goodwill		300,527			296,638	299,248			290,215	300,527	299,248
Deferred tax asset, net		13			487				12,242	13
Accounts payable, accrued expenses and other current liabilities		77,957			57,380	57,958			60,134	77,957	57,958
Retained earnings		389,163			383,256	386,622			360,524	389,163	386,622
Accumulated other comprehensive loss		(52,398)			(48,739)	(42,356)			(44,591)	(52,398)	(42,356)
Pawn service charges					83,519				76,022		304,577	$ 273,077
Operations expense					88,763				83,592	350,578	334,841	304,956
Administrative					15,255				13,081	63,665	53,639	53,492
Income (loss) from continuing operations before income taxes					(4,718)				19,709	4,174	55,539	42,678
Income tax expense					(1,058)				7,411	2,406	18,389	11,093
(Loss) income from continuing operations, net of tax		$ (592)	$ 3,361	$ 2,659	$ (3,660)	$ (807)	$ 14,004	$ 11,707	$ 12,246	$ 1,768	$ 37,150	$ 31,585
Basic earnings (loss) per share attributable to EZCORP, Inc. — continuing operations (usd per share)		$ (0.01)	$ 0.06	$ 0.06	$ (0.06)	$ (0.02)	$ 0.26	$ 0.22	$ 0.24	$ 0.05	$ 0.70	$ 0.61
Diluted earnings (loss) per share attributable to EZCORP, Inc. — continuing operations (usd per share)		$ (0.01)	$ 0.06	$ 0.06	$ (0.06)	$ (0.02)	$ 0.25	$ 0.21	$ 0.23	$ 0.05	$ 0.66	$ 0.61
Net income (loss)		$ (645)	$ 3,158	$ 2,641	$ (3,843)	$ (1,032)	$ 14,095	$ 11,207	$ 12,024	$ 1,311	$ 36,294	$ 29,760
Deferred income taxes										1,616	7,916	6,096
Service charges and fees receivable					(726)				307	(732)	(1,788)	(285)
Accounts payable, accrued expenses and other liabilities					(836)				(5,415)	22,246	(3,271)	(30,894)
Income taxes, net of excess tax benefit from stock compensation					(3,445)					(10,404)	(3,785)	3,110
Net cash provided by operating activities					23,381				19,368	103,517	88,981	50,666
Effect of exchange rate changes on cash and cash equivalents and restricted cash					(782)				(1,383)	$ (507)	(654)	724
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cash and cash equivalents									113,584
Pawn service charges receivable, net					38,959				34,054
Prepaid expenses and other current assets					31,223				26,156
Goodwill					294,881				288,773
Deferred tax asset, net					(334)				10,997
Accounts payable, accrued expenses and other current liabilities					57,628				60,207
Retained earnings					387,936				364,414
Accumulated other comprehensive loss					(49,104)				(44,902)
Pawn service charges					83,674				76,360		305,936	273,080
Operations expense					89,546				83,610		334,649	304,636
Administrative					15,479				13,318		53,653	53,254
Income (loss) from continuing operations before income taxes					(5,570)				19,792		57,076	43,239
Income tax expense					(1,032)				7,437		18,149	11,206
(Loss) income from continuing operations, net of tax					$ (4,538)				$ 12,355		$ 38,927	$ 32,033
Basic earnings (loss) per share attributable to EZCORP, Inc. — continuing operations (usd per share)					$ (0.07)				$ 0.24		$ 0.73	$ 0.62
Diluted earnings (loss) per share attributable to EZCORP, Inc. — continuing operations (usd per share)					$ (0.07)				$ 0.23		$ 0.69	$ 0.62
Net income (loss)					$ (4,721)				$ 12,133		$ 38,071	$ 30,208
Deferred income taxes											7,978	6,046
Service charges and fees receivable					(877)				(50)		(3,153)	(224)
Accounts payable, accrued expenses and other liabilities					(461)				(5,283)		(3,902)	(31,041)
Income taxes, net of excess tax benefit from stock compensation					(3,412)						(3,622)	3,027
Net cash provided by operating activities					22,760				19,252		88,987	50,895
Effect of exchange rate changes on cash and cash equivalents and restricted cash					(865)				(1,165)		(484)
Corrections
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cash and cash equivalents									(627)
Pawn service charges receivable, net					(7,401)				(5,950)
Prepaid expenses and other current assets					260				238
Goodwill					1,757				1,442
Deferred tax asset, net					821				1,245
Accounts payable, accrued expenses and other current liabilities					(248)				(73)
Retained earnings					(4,680)				(3,890)
Accumulated other comprehensive loss					365				311
Pawn service charges					(155)				(338)		(1,359)	(3)
Operations expense					(783)				(18)		192	320
Administrative					(224)				(237)		(14)	238
Income (loss) from continuing operations before income taxes					852				(83)		(1,537)	(561)
Income tax expense					(26)				(26)		240	(113)
(Loss) income from continuing operations, net of tax					$ 878				$ (109)		$ (1,777)	$ (448)
Basic earnings (loss) per share attributable to EZCORP, Inc. — continuing operations (usd per share)					$ 0.01				$ 0		$ (0.03)	$ (0.01)
Diluted earnings (loss) per share attributable to EZCORP, Inc. — continuing operations (usd per share)					$ 0.01				$ 0		$ (0.03)	$ (0.01)
Net income (loss)					$ 878				$ (109)		$ (1,777)	$ (448)
Deferred income taxes											(62)	50
Service charges and fees receivable					151				357		1,365	(61)
Accounts payable, accrued expenses and other liabilities					(375)				(132)		631	147
Income taxes, net of excess tax benefit from stock compensation					(33)						(163)	83
Net cash provided by operating activities					621				116		(6)	$ (229)
Effect of exchange rate changes on cash and cash equivalents and restricted cash					$ 83				$ (218)		$ (170)