Employee Benefits (Tables)

6 Months Ended

Jun. 30, 2017

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost (Credit)

Components of Net Periodic Benefit Cost for the Three Months Ended June 30,

	Pension Benefits						Supplemental Insurance/ Retirement Plan
	2017			2016			2017		2016
	(in thousands)
Service cost	$	310		$	318		$	395	$	455
Interest		362			340			345		334
Expected return on plan assets		(746	)		(694	)		—		—
Recognized prior service cost (benefit)		(26	)		(26	)		29		29
Recognized net actuarial losses		226			200			159		200
Net periodic benefit cost	$	126		$	138		$	928	$	1,018

Components of Net Periodic Benefit Cost for the Six Months Ended June 30,

	Pension Benefits						Supplemental Insurance/ Retirement Plan
	2017			2016			2017		2016
	(in thousands)
Service cost	$	620		$	636		$	790	$	910
Interest		724			680			690		668
Expected return on plan assets		(1,492	)		(1,388	)		—		—
Recognized prior service cost (benefit)		(52	)		(52	)		58		58
Recognized net actuarial losses		452			400			318		400
Net periodic benefit cost	$	252		$	276		$	1,856	$	2,036