Strategic Investments - Summarized Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Summary of financial information for Cash Converters International Limited
Current assets	$ 606,644	$ 585,820	$ 606,644	$ 585,820			$ 593,250
Total assets	1,196,253	1,213,132	1,196,253	1,213,132			1,197,023
Current liabilities	121,480	110,555	121,480	110,555			132,467
Total liabilities and equity	1,196,253	1,213,132	1,196,253	1,213,132			$ 1,197,023
Gross profit	113,748	127,362	222,138	257,430
Net profit (loss)	$ 5,330	$ (40,874)	$ 9,629	(39,636)
Cash Converters International Limited
Summary of financial information for Cash Converters International Limited
Current assets						$ 170,412		$ 164,906
Non-current assets						189,810		199,277
Total assets						360,222		364,183
Current liabilities						59,962		93,958
Non-current liabilities						58,368		60,503
Shareholders’ equity						241,892		209,722
Total liabilities and equity						$ 360,222		$ 364,183
Gross revenues				71,153	$ 98,531
Gross profit				51,231	59,250
Net profit (loss)				$ 5,561	$ (13,280)