3. Accrued product warranty liability

3 Months Ended

Mar. 31, 2015

Product Warranties Disclosures [Abstract]

Product Warranty Disclosure [Text Block]

3. Accrued product warranty liability

We generally warrant our products for up to 36 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, 2015:

	(In thousands)
Balance, beginning of period	$	287
Warranties issued		40
Warranty settlements		(71)
Balance, end of period	$	256

Approximately $174,000 of the accrued product warranty liability is classified as current in Accrued liabilities at March 31, 2015 in the Condensed Balance Sheets.  The remaining $82,000 of the accrued product warranty liability is classified as long-term in Other liabilities.