Product Warranties (Tables)

3 Months Ended

Mar. 31, 2019

Guarantees and Product Warranties [Abstract]

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.