Accrued Expenses and Other Liabilities

12 Months Ended

Dec. 31, 2017

Accrued Expenses and Other Liabilities

Note 9 — Accrued Expenses and Other Liabilities

The components of accrued expenses and other current liabilities were as follows:

	December 31,
	2017		2016
	(in thousands)
Payroll and related benefits	$	32,996	$	18,780
Warranty	6,532		4,217
Interest	4,430		—
Professional fees	3,942		1,827
Merger consideration payable	2,662		—
Installation	2,271		1,382
Sales, use, and other taxes	2,144		1,282
Restructuring liability	1,520		1,796
Other	3,842		3,917

Total	$	60,339	$	33,201

Customer deposits and deferred revenue

Customer deposits totaled $41.5 million and $22.2 million at December 31, 2017 and 2016, respectively, which are included in “Customer deposits and deferred revenue” in the Consolidated Balance Sheets.

Other liabilities

The Company maintains an executive non-qualified deferred compensation plan that was assumed from Ultratech that allows qualifying executives to defer cash compensation. At December 31, 2017, plan assets approximated $3.4 million representing the cash surrender value of life insurance policies and is included within “Other assets” in the Consolidated Balance Sheets, while plan liabilities approximated $4.7 million and is included within “Other liabilities” in the Consolidated Balance Sheets. Other liabilities also included asset retirement obligations of $3.3 million, medical and dental benefits of $2.2 million, and acquisition related accruals of $0.4 million at December 31, 2017. At December 31, 2016, other liabilities primarily consisted of a non-current income tax payable of $4.9 million.