Stockholders' Equity (Tables)

12 Months Ended

Sep. 30, 2017

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, 2017, 2016 and 2015 (in thousands):

			Unrealized
			Gains (Losses)
	Currency		on Available-		Pension
	Translation		for-Sale		Liability
	Adjustments		Securities		Adjustments		Total
Balance at September 30, 2014	$	16,102	$	(38)	$	(377)	$	15,687
Other comprehensive (loss) income before reclassifications		(9,426)		144		(605)		(9,887)
Amounts reclassified from accumulated other comprehensive income		(131)		(3)		232		98
Balance at September 30, 2015		6,545		103		(750)		5,898
Other comprehensive income (loss) before reclassifications		8,844		(231)		(322)		8,291
Amounts reclassified from accumulated other comprehensive income		—		125		852		977
Balance at September 30, 2016		15,389		(3)		(220)		15,166
Other comprehensive (loss) income before reclassifications		(221)		(10)		514		283
Amounts reclassified from accumulated other comprehensive income		—		12		(248)		(236)
Balance at September 30, 2017	$	15,168	$	(1)	$	46	$	15,213