Stockholders' Equity (Tables)

12 Months Ended

Sep. 30, 2020

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income

The following is a summary of the components of accumulated other comprehensive income, net of tax, at September 30, 2020, 2019 and 2018 (in thousands):

			Unrealized
			Gains (Losses)
	Currency		on Available-		Pension
	Translation		for-Sale		Liability
	Adjustments		Securities		Adjustments		Total
Balance at September 30, 2017	$	15,168	$	(1)	$	46	$	15,213
Other comprehensive income (loss) before reclassifications		(1,651)		(110)		124		(1,637)
Amounts reclassified from accumulated other comprehensive income		—		(1)		12		11
Balance at September 30, 2018		13,517		(112)		182		13,587
Other comprehensive income (loss) before reclassifications		(9,333)		244		(882)		(9,971)
Amounts reclassified from accumulated other comprehensive income		—		(140)		35		(105)
Balance at September 30, 2019		4,184		(8)		(665)		3,511
Other comprehensive income (loss) before reclassifications		18,877		5		(503)		18,379
Amounts reclassified from accumulated other comprehensive income		—		2		27		29
Balance at September 30, 2020	$	23,061	$	(1)	$	(1,141)	$	21,919