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Retirement Plans
 9 Months Ended
Sep. 29, 2019
Retirement Benefits [Abstract]  
Retirement Plans RETIREMENT PLANS
We provide defined-contribution benefits to eligible employees, as well as some remaining defined-benefit pension and other post-retirement benefits.
Net periodic defined-benefit pension and other post-retirement benefit cost (credit) for the three- and nine-month periods ended September 29, 2019, and September 30, 2018, consisted of the following:
 
Pension Benefits
Other Post-retirement Benefits
Three Months Ended
September 29, 2019
 
September 30, 2018
September 29, 2019
 
September 30, 2018
Service cost
$
28

 
$
45

$
2

 
$
3

Interest cost
150

 
140

9

 
8

Expected return on plan assets
(228
)
 
(225
)
(9
)
 
(10
)
Recognized net actuarial loss (gain)
98

 
94

(2
)
 
(1
)
Amortization of prior service credit
(4
)
 
(11
)
(1
)
 
(1
)
Net periodic benefit cost (credit)
$
44

 
$
43

$
(1
)
 
$
(1
)
Nine Months Ended
 
 
 
 
 
 
Service cost
$
84

 
$
135

$
6

 
$
8

Interest cost
450

 
394

27

 
24

Expected return on plan assets
(684
)
 
(632
)
(27
)
 
(29
)
Recognized net actuarial loss (gain)
238

 
283

(6
)
 
(3
)
Amortization of prior service credit
(13
)
 
(33
)
(3
)
 
(3
)
Net periodic benefit cost (credit)
$
75

 
$
147

$
(3
)
 
$
(3
)

Based on recent market conditions, we adjusted our assumptions for our non-qualified supplemental retirement plans, and the third quarter of 2019 reflects a cumulative adjustment to recognize the resulting increase in expense.
Our contractual arrangements with the U.S. government provide for the recovery of contributions to our pension and other post-retirement benefit plans covering employees working in our defense segments. For non-funded plans, our government contracts allow us to recover claims paid. Following payment, these recoverable amounts are allocated to contracts and billed to the customer in accordance with the Cost Accounting Standards (CAS) and specific contractual terms. For some of these plans, the cumulative pension and other post-retirement benefit cost exceeds the amount currently allocable to contracts. To the extent we consider recovery of the cost to be probable based on our backlog and probable follow-on contracts, we defer the excess in other contract costs in other current assets on the Consolidated Balance Sheet until the cost is allocable to contracts. For other plans, the amount allocated to contracts and included in revenue has exceeded the plans’ cumulative benefit cost. We have similarly deferred recognition of these excess earnings on the Consolidated Balance Sheet.