Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2015

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs

The components of net periodic pension expense (income) are as follows: 

	Year Ended December 31,
	2015			2014			2013
Interest cost	$	2,289		$	2,360		$	2,112
Expected return on plan assets	(3,199		)	(3,105		)	(2,705		)
Amortization of net loss	1,429			320			1,348
Total net periodic pension expense (income)	$	519		$	(425	)	$	755

Schedule of Changes in Projected Benefit Obligation and Plan Assets, Funded Status and Amounts Recognized on the Balance Sheet

The changes in the projected benefit obligation and plan assets, the funded status of the plans and the amounts recognized in the consolidated balance sheets are as follows:

	December 31,
	2015			2014
Change in projected benefit obligation:
Projected benefit obligation at beginning of year	$	62,107		$	50,684
Interest cost	2,289			2,360
Benefits paid	(3,088		)	(1,876		)
Actuarial (gains) losses	(3,035		)	10,939
Projected benefit obligation at year end	$	58,273		$	62,107
Change in plan assets:
Fair value of plan assets at beginning of year	$	45,187		$	42,965
Actual (loss) return	(1,109		)	2,160
Employer contributions	—			1,938
Benefits paid	(3,088		)	(1,876		)
Fair value of plan assets at year end	$	40,990		$	45,187
Funded status (Accrued pension liabilities)	$	(17,283	)	$	(16,920	)
Unrecognized actuarial loss recognized in accumulated other comprehensive loss	$	19,657		$	19,814

Schedule of Assumptions Used

The actuarial assumptions used in determining pension plan information are as follows:

	December 31,
	2015		2014		2013
Assumptions used to determine benefit obligation at year end:
Discount rate	4.00	%	3.75	%	4.75	%
Assumptions used to determine net periodic benefit cost:
Discount rate	3.75	%	4.75	%	3.75	%
Expected long-term weighted-average rate of return on plan assets	7.25	%	7.25	%	7.25	%

Schedule of Allocation of Plan Assets [Table Text Block]

The target allocations by asset category at December 31 are as follows:

Target Allocations by Asset Category:	2015	2014
Equity	60%	55%
Fixed income	30%	43%
Cash and cash equivalents	6%	2%
Other	4%	0%
Total	100%	100%

The fair values of the plan assets by asset class at December 31 are as follows:

	Fair Value
	Total				Level 2				Level 3
Plan Assets:	2015		2014		2015		2014		2015		2014
Equity funds	$	27,814	$	29,435	$	27,814	$	29,435	$	—	$	—
Fixed income funds	12,846		13,766		12,846		13,766		—		—
Other investments	330		1,986		—		—		330		1,986
Total	$	40,990	$	45,187	$	40,660	$	43,201	$	330	$	1,986

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

Balance at January 1, 2014	$	2,161
Return on plan assets	34
Purchases, sales and settlements, net	(1,898		)
Transfers, net	1,689
Balance at December 31, 2014	$	1,986
Return on plan assets	89
Purchases, sales and settlements, net	(3,486		)
Transfers, net	1,741
Balance at December 31, 2015	$	330

Schedule of Expected Benefit Payments

The Company’s funding policy is to contribute at least the minimum funding amounts required by law. Based upon current actuarial estimates, the Company does not expect to contribute to its defined benefit pension plan until 2017. The following benefit payments are expected to be paid by the plan in each of the next five years and in the aggregate for the subsequent five years:

2016	$	2,300
2017	2,500
2018	2,700
2019	2,800
2020	2,900
In aggregate during five years thereafter	16,200