Other Assets and Other Noncurrent Liabilities

Other assets as of December 31, 2016 and July 2, 2016 include the following:



	December 31, 2016			July 2, 2016
Executive deferred compensation assets	$	34,831		$	33,080
Cash surrender value of life insurance policies	15,073			14,860
Customer contracts and non-competition agreements, net	2,760			3,464
Derivative financial instruments	784			—
Other assets	5,416			6,658
Less: portion classified as current assets	(2,325		)	(3,040		)
Total other noncurrent assets	$	56,539		$	55,022

The customer contracts include the combined value of the written service agreements and the related customer relationship. Customer contracts are amortized over a weighted average life of approximately ten years and are as follows:



	December 31, 2016			July 2, 2016
Customer contracts and non-competition agreements	$	14,564		$	14,576
Accumulated amortization	(11,804		)	(11,112		)
Net	$	2,760		$	3,464

Amortization expense was $346 and $340 for the three months ended December 31, 2016 and December 26, 2015, and $694 and $718 for the six months ended December 31, 2016 and December 26, 2015, respectively. Estimated amortization expense for each of the next five fiscal years based on the intangible assets as of December 31, 2016 is as follows:



2017 remaining	$	547
2018	435
2019	216
2020	204
2021	192
Thereafter	1,166

Other noncurrent liabilities as of December 31, 2016 and July 2, 2016 include the following:



	December 31, 2016			July 2, 2016
Multi-employer pension withdrawal liability	$	—		$	803
Pension plan liability	28,401			32,446
Executive deferred compensation plan liability	34,831			33,080
Supplemental executive retirement plan liability	18,448			18,523
Accrued income taxes	7,389			7,363
Workers' compensation liability	16,169			18,036
Derivative financial instruments	1,147			8,189
Other liabilities	5,894			5,725
Less: Portion classified as current liabilities	(7,895		)	(9,739		)
Total other noncurrent liabilities	$	104,384		$	114,426