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Employee Retirement Plans (Tables)
 12 Months Ended
Dec. 31, 2015
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]  
Schedule of Funded Status
The following table presents the changes in the plan’s projected benefit obligation, fair value of plan assets, and funded status for the years ended December 31 (in thousands):
 
2015
 
2014
 
2013
Projected benefit obligation at January 1
$
1,961

 
$
2,179

 
$
2,478

Service cost
—

 
—

 
—

Interest cost
66

 
88

 
80

Actuarial (gains) losses
(39
)
 
9

 
(58
)
Benefits paid
(303
)
 
(315
)
 
(321
)
Projected benefit obligation at December 31
1,685

 
1,961

 
2,179

Fair value of plan assets
—

 
—

 
—

Under funded status
(1,685
)
 
(1,961
)
 
(2,179
)
Unamortized prior service cost
10

 
24

 
39

Unrecognized actuarial gain
(218
)
 
(179
)
 
(188
)
Net amount recognized
$
(1,893
)
 
$
(2,116
)
 
$
(2,328
)
Schedule of Defined Benefit Plan, Amounts Recognized in Consolidated Financial Statements
Amounts recognized in the consolidated financial statements consisted of (in thousands):
Accrued pension liability:
 
 
 
 
 
Current portion
$
(372
)
 
$
(395
)
 
$
(415
)
Long term portion
(1,313
)
 
(1,566
)
 
(1,764
)
Pre-tax accumulated other comprehensive income – retirement benefit liability adjustment
(208
)
 
(155
)
 
(149
)
Net amount recognized
$
(1,893
)
 
$
(2,116
)
 
$
(2,328
)
Components of Net Periodic Pension and Other Post-Retirement Benefit Costs Charged to Expense
Components of net periodic pension cost for the years ended December 31 were as follows (in thousands):
 
2015
 
2014
 
2013
Interest cost
$
66

 
$
88

 
$
80

Amortization of unrecognized prior service cost
14

 
15

 
14

Net periodic pension cost
$
80

 
$
103

 
$
94

Assumptions used to calculate the benefit obligation:
 
 
 
 
 
Discount rate
3.94
%
 
3.74
%
 
4.45
%
Schedule of Expected Benefit Payments
Expected benefit payments from the plan for the years ended December 31 are as follows (in thousands):
2016
$
372

2017
$
360

2018
$
327

2019
$
228

2020
$
137

Years 2021 - 2025
$
492
Schedule of Multiemployer Plans
The Company’s participation in these plans for the year ended December 31, 2015 is outlined in the table below. The “EIN/ Pension Plan Number” column provides the Employee Identification Number (EIN) and three-digit plan number, if applicable. Unless otherwise noted, the most recent Pension Protection Act (PPA) zone status available in 2015 and 2014 is for the plan’s year ended December 31, 2014 and 2013, respectively. The zone status is based on information that the Company received from the plans and is certified by the plans’ actuaries. Among other factors, plans in the red zone are generally less than 65% funded, plans in the yellow zone are less than 80% funded, and plans in the green zone are at least 80% funded.
 
EIN/ Pension
 
PPA Zone Status
 
Surcharge
Pension Fund
Plan Number
 
2014
 
2013
 
Imposed
National Integrated Group Pension Plan
22-6190618-001
 
Red
 
Red
 
Yes
Sheet Metal Workers’ National Pension Plan
52-6112463-001
 
Yellow
 
Red
 
Yes
Sheet Metal Workers’ Pension Plan of Northern California
51-6115939-001
 
Red
 
Red
 
No
Schedule of Contributions Made by the Company to Each Multiemployer Plan
The table below sets forth the contributions made by the Company to each multiemployer plan for the years ended December 31 (in thousands):
Pension Fund
2015
 
2014
 
2013
National Integrated Group Pension Plan
$
246

 
$
233

 
$
222

Sheet Metal Workers’ National Pension Plan
56

 
61

 
78

Sheet Metal Workers’ Pension Plan of Northern California
31

 
35

 
28

 
$
333

 
$
329

 
$
328
Schedule of Total Expense for All Retirement Plans
Total expense for all retirement plans for the years ended December 31 was (in thousands):
2015
 
2014
 
2013
$
2,934

 
$
2,816

 
$
2,838