Workers' Compensation Expense (Tables)

6 Months Ended

Jun. 30, 2017

Compensation Related Costs [Abstract]

Workers' compensation expense

Workers’ compensation expense consists of the following components:

	Successor		Predecessor		Successor		Predecessor
	Three Months Ended June 30, 2017		Three Months Ended June 30, 2016		Six Months Ended June 30, 2017		Six Months Ended June 30, 2016
(In thousands)
Self-insured occupational disease benefits:
Service cost	$	1,559	$	1,310	$	3,117	$	2,415
Interest cost	1,168		1,029		2,337		2,086
Net amortization	—		1,006		—		2,147
Curtailments	$	—	$	4,156	$	—	$	4,156
Total occupational disease	$	2,727	$	7,501	$	5,454	$	10,804
Traumatic injury claims and assessments	2,532		1,246		5,410		4,213
Total workers’ compensation expense	$	5,259	$	8,747	$	10,864	$	15,017