CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net Income (Loss)	$ 10,487	$ (1,102)	$ 20,812	$ 2,501
Unrealized losses on securities available for sale:
Unrealized holding losses arising during the period	(3,427)	(7,929)	(2,565)	(8,677)
Income tax benefit	720	1,694	538	1,858
Net of tax amount	(2,707)	(6,235)	(2,027)	(6,819)
Less: reclassification adjustment for realized (gains) losses included in net income		(7)		(7)
Income tax expense		2		2
Net of tax amount		(5)		(5)
Other Comprehensive Loss	(2,707)	(6,240)	(2,027)	(6,824)
Comprehensive Income (Loss)	7,780	(7,342)	18,785	(4,323)
Less: comprehensive income (loss) attributable to noncontrolling interests		(475)	402	(311)
Comprehensive Income (Loss) Attributable to First Savings Financial Group, Inc.	$ 7,780	$ (6,867)	$ 18,383	$ (4,012)