Valuation and Qualifying Accounts

12 Months Ended

Sep. 30, 2015

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, 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
Year ended September 30, 2013
Allowance for doubtful accounts on accounts and notes receivable		280		457		—		(361	)		376
	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, 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
Year ended September 30, 2013
Inventory obsolescence reserve		9,324		187		—		(2,579	)		6,932