ASSOCIATE BENEFIT PLANS (Tables)

3 Months Ended

Mar. 31, 2018

Postemployment Benefits [Abstract]

Schedule of Net Periodic Benefit Cost Components of Postretirement Benefits

The following are disclosures of the net periodic benefit cost components of postretirement medical benefits measured at January 1, 2018 and 2017.

	Three months ended March 31,
(Dollars in thousands)	2018			2017
Service cost	$	15		$	15
Interest cost	17			19
Prior service cost amortization	(19		)	(19		)
Net gain recognition	(11		)	(16		)
Net periodic benefit cost	$	2		$	(1	)

The following table shows the net periodic benefit cost components for the Alliance Associate Pension Plan benefits measured at January 1, 2018.

(Dollars in thousands)	Three months ended March 31,
	2018			2017
Service cost	$	10		$	10
Interest cost	73			75
Expected return on plan assets	(135		)	(135		)
Prior service cost amortization	—			—
Net gain recognition	—			—
Net periodic benefit cost	$	(52	)	$	(50	)