Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2017

Accumulated Other Comprehensive Income (Loss)

Schedule of changes in Accumulated Other Comprehensive Income (Loss) (AOCI) by component, net of tax

			2017		2016		2015
Beginning balance, January 1,			$	21,884	$	(12,951)	$	(11,299)
	Other comprehensive income before reclassifications			(3,489)		38,144		(2,441)
	Amounts reclassified from accumulated other
		comprehensive income		(4,588)		(3,309)		789
	Net current period other comprehensive income (loss)			(8,077)		34,835		(1,652)
Ending balance, December 31,			$	13,807	$	21,884	$	(12,951)

Summary of reclassifications out of AOCI

Postretirement Medical Plan (1)		2017		2016		2015
Amortization of prior service costs (credits) included in
	Cost of product sold (2)	$	(6,087)	$	(4,394)	$	1,056
Amortization of prior service costs (credits) included in selling, general
	and administrative expenses (2)		(1,197)		(859)		196
Total before tax			(7,283)		(5,253)		1,252
Tax expense (benefit)			2,695		1,944		(463)
Amounts reclassified from accumulated other comprehensive income		$	(4,588)	$	(3,309)	$	789

• See Note 16 for the computation of net periodic postretirement benefit costs.
• Presented in the Consolidated Statements of Operations and Comprehensive Income (Loss).