Accrued product warranty liability

9 Months Ended

Sep. 30, 2017

Accrued product warranty liability [Abstract]

Accrued product warranty liability

3. Accrued product warranty liability

We generally warrant our products for up to 24 months and record the estimated cost of such product warranties at the time the sale is recorded. Estimated warranty costs are based upon actual past experience of product repairs and the related estimated cost of labor and material to make the necessary repairs.

The following table summarizes the activity recorded in the accrued product warranty liability during the nine months ended September 30, 2017 and 2016:

	Nine Months Ended September 30,
	2017			2016
	(In thousands)
Balance, beginning of period		$	267		$	277
Warranties issued			184			206
Warranty settlements			(187)			(200)
Balance, end of period		$	264		$	283

As of September 30, 2017, $184,000 of the accrued product warranty liability is classified as current in "Accrued liabilities" in the Condensed Consolidated Balance Sheets and the remaining $80,000 is classified as long-term in "Other liabilities".

4. Earnings per share