Other Assets and Other Noncurrent Liabilities

Other assets as of June 27, 2015 and June 28, 2014 included the following:



	June 27, 2015			June 28, 2014
Executive deferred compensation assets	$	34,414		$	32,667
Cash surrender value of life insurance policies	14,659			14,287
Derivative financial instruments	4,857			—
Customer contracts, net	4,544			6,448
Other assets	7,854			10,603
Less: Portion classified as current assets	(1,922		)	(2,177		)
Total other assets	$	64,406		$	61,828

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:



	June 27, 2015			June 28, 2014
Customer contracts and non-competition agreements	$	20,244		$	23,838
Accumulated amortization	(15,700		)	(17,390		)
Net	$	4,544		$	6,448

Amortization expense was $1,940, $2,657 and $4,063 for fiscal years 2015, 2014 and 2013, respectively. Estimated amortization expense for each of the next five fiscal years based on the intangible assets as of June 27, 2015 is as follows:



2016	1,394
2017	1,198
2018	416
2019	183
2020	171
Thereafter	1,181

Other noncurrent liabilities as of June 27, 2015 and June 28, 2014 included the following:



	June 27, 2015			June 28, 2014
Multi-employer pension withdrawal liability	$	9,329		$	30,372
Pension plan liability	20,188			15,422
Executive deferred compensation plan liability	34,529			32,761
Supplemental executive retirement plan liability	16,686			17,610
Accrued income taxes	8,294			12,043
Workers' compensation liability	18,577			18,582
Other liabilities	7,659			4,603
Less: Portion classified as current liabilities	(7,819		)	(9,700		)
Total other noncurrent liabilities	$	107,443		$	121,693