Valuation and Qualifying Accounts

12 Months Ended

Sep. 30, 2016

Valuation And Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts

Schedule II

Geospace Technologies Corporation and Subsidiaries

Valuation and Qualifying Accounts

(In thousands)

	Balance at Beginning of Period		Charged to Costs and Expenses		Charged to Other Assets		(Deductions) and Additions			Balance at End of Period
Year ended September 30, 2016
Allowance for doubtful accounts on accounts    and notes receivable	$	2,516	$	763	$	—	$	(330	)	$	2,949
Year ended September 30, 2015
Allowance for doubtful accounts on accounts    and notes receivable		1,125		2,147		—		(756	)		2,516
Year ended September 30, 2014
Allowance for doubtful accounts on accounts    and notes receivable		376		833		—		(84	)		1,125

	Balance at Beginning of Period		Charged to Costs and Expenses		Charged to Other Assets		(Deductions) and Additions			Balance at End of Period
Year ended September 30, 2016
Inventory obsolescence reserve	$	6,675	$	10,590	$	—	$	(7,591	)	$	9,674
Year ended September 30, 2015
Inventory obsolescence reserve		7,764		3,887		—		(4,976	)		6,675
Year ended September 30, 2014
Inventory obsolescence reserve		6,932		2,617		—		(1,785	)		7,764