Defined Benefit Pension Plan

12 Months Ended

Dec. 30, 2017

Compensation And Retirement Disclosure [Abstract]

Defined Benefit Pension Plan

Note 12. Defined Benefit Pension Plan

Nanometrics sponsors a statutory government mandated defined benefit pension plan (the “Benefit Plan”) in Taiwan for its local employees. The fair value of plan assets was $0.3 million for fiscal year ended 2017, and $0.2 million for each of fiscal years 2016 and 2015, respectively; and the net funding deficiency of the Benefit Plan was $0.5 million, $0.4 million, and $0.3 million for the fiscal years ended December 30, 2017, December 31, 2016, and December 26, 2015, respectively. Based on the nature and limited extent of the pension plan, we determined this pension plan was not material for separate disclosure.