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Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net loss	$ (40,581)	$ (22,562)
Other comprehensive (loss) income net of tax:
Pension liability adjustments, net of tax	(597)	734
Postretirement liability adjustments, net of tax	(24)	(138)
Other comprehensive (loss) income	(621)	596
Comprehensive loss	$ (41,202)	$ (21,966)

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- Definition

The adjustment out of other comprehensive income for prior service costs recognized as a component of net period benefit cost during the period, after tax. Also includes actuarial gains/losses recognized out of OCI in addition to prior service costs. This is the portion attributable to the pension liability.

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The adjustment out of other comprehensive income for prior service costs recognized as a component of net period benefit cost during the period, after tax. Also includes actuarial gains/losses recognized out of OCI in addition to prior service costs. This is the portion attributable to the postretirement benefits liability.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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