Product Warranties

12 Months Ended

Dec. 31, 2016

Product Warranties

Product Warranties

7. Product Warranties

The Company establishes a warranty reserve for equipment project sales and estimates the warranty accrual based on the history of warranty claims to total sales, adjusted for significant known claims in excess of established reserves.

Warranty terms are based on the negotiated equipment project contract and typically are either 18 months from shipment date or 12 months from project startup date.  The change in the warranty reserve, which is included in accounts payable and accrued liabilities in the consolidated balance sheets, is as follows:

	December 31
	2016		2015
Balance as of January 1	$	1,252	$	1,449
Payments and replacement product		(1,495)		(677)
Additions to warranty reserve for warranties issued during the period		1,647		485
Change in the warranty reserve for pre-existing warranties		(2)		(5)
Balance as of December 31	$	1,402	$	1,252