Product Warranties

3 Months Ended

Mar. 31, 2019

Guarantees and Product Warranties [Abstract]

12)	Product Warranties

The Company records the estimated costs to fulfill customer warranty obligations upon the recognition of the related revenue. While the Company engages in extensive product quality programs and processes, including actively monitoring and evaluating the quality of its component suppliers, the Company’s warranty obligation is affected by shipment volume, product failure rates, utilization levels, material usage, and supplier warranties on parts delivered to the Company. Should actual product failure rates, utilization levels, material usage, or supplier warranties on parts differ from the Company’s estimates, revisions to the estimated warranty liability would be required.

Product warranty activities were as follows:


	Three Months Ended March 31,
	2019			2018
Beginning of period	$	10,399		$	10,104
Assumed product warranty liability from ESI Merger		7,177			—
Provision for product warranties		6,062			5,184
Direct and other charges to warranty liability		(6,705	)		(4,073	)

End of period⁽¹⁾	$	16,933		$	11,215

⁽¹⁾

As of March 31, 2019, short-term product warranty of $13,843 and long-term product warranty of $3,090 were included within other current liabilities and other liabilities, respectively, within the accompanying condensed consolidated balance sheet. As of March 31, 2018, short-term product warranty of $10,856 and long-term product warranty of $359 were included within other current liabilities and other liabilities, respectively, within the accompanying condensed consolidated balance sheet.