Accrued product warranty liability

3 Months Ended

Mar. 31, 2020

Accrued product warranty liability [Abstract]

Accrued product warranty liability

5. Accrued product warranty liability

We generally provide warranties on 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 three months ended March 31, 2020 and 2019:

	Three Months Ended March 31,
	2020			2019
	(In thousands)
Balance, beginning of period	$	215		$	273
Warranties issued		45			40
Warranty settlements		(47	)		(60	)
Balance, end of period	$	213		$	253

As of March 31, 2020, $171 thousand of the accrued product warranty liability was classified as current in "Accrued liabilities" in the Condensed Consolidated Balance Sheets and the remaining $42 thousand was classified as non-current in "Other liabilities".