Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Dec. 31, 2017

Equity [Abstract]

Accumulated Other Comprehensive Loss (Activity)

The activity for each item of accumulated other comprehensive loss is as follows:

	Foreign currency items			Pension and postretirement benefits plans			Accumulated other comprehensive loss
Beginning balance, January 1, 2016	$	(21,079	)	$	(18,575	)	$	(39,654	)
Net current period change	(3,234		)	(6,347		)	(9,581		)
Reclassification adjustments for losses reclassified into income	—			390			390
Ending balance, December 31, 2016	$	(24,313	)	$	(24,532	)	$	(48,845	)
Net current period change	7,141			814			7,955
Reclassification adjustments for losses reclassified into income	—			(345		)	(345		)
Ending balance, December 31, 2017	$	(17,172	)	$	(24,063	)	$	(41,235	)

Related Tax Effects Allocated to Each Component of Accumulated Other Comprehensive Income (Loss)

The related tax effects allocated to each component of other comprehensive income (loss) for the years ended December 31, 2017 and 2016 are as follows:

2017	Before Tax Amount			Tax (Expense) Benefit			After Tax Amount
Retirement benefits adjustment:
Net actuarial gain and prior service credit	$	1,072		$	(258	)	$	814
Reclassification of actuarial loss and prior service cost to net income	(257		)	(88		)	(345		)
Net unrealized gain	815			(346		)	469
Cumulative translation adjustment	7,141			—			7,141
Total other comprehensive income	$	7,956		$	(346	)	$	7,610
2016	Before Tax Amount			Tax (Expense) Benefit			After Tax Amount
Retirement benefits adjustment:
Net actuarial gain and prior service credit	$	(6,553	)	$	206		$	(6,347	)
Reclassification of actuarial loss and prior service cost to net income	507			(117		)	390
Net unrealized loss	(6,046		)	89			(5,957		)
Cumulative translation adjustment	(3,235		)	1			(3,234		)
Total other comprehensive loss	$	(9,281	)	$	90		$	(9,191	)