Product Warranties (Notes)

3 Months Ended

Dec. 31, 2017

Standard Product Warranty, Policy [Policy Text Block]

Product Warranties

The Company provides for the estimated cost of product warranties at the time revenue is recognized. While the Company engages in product quality programs and processes, including monitoring and evaluating the quality of its component suppliers, its warranty obligation is affected by product failure rates, material usage and service delivery costs incurred in correcting a product failure. Should actual product failure rates, material usage or service delivery costs differ from its estimates, revisions to the estimated warranty liability may be required.

Changes in the Company's warranty liability (included in accrued expenses) for the three month periods ended December 31, 2017 and 2016 were as follows:



	Three Months Ended December 31,
	2017			2016
Balance at beginning of period	$	431,000		$	650,000
Provision for warranties	83,000			114,000
Expenses incurred	(83,000		)	(114,000		)
Balance at end of period	$	431,000		$	650,000