Other Noncurrent Liabilities (Tables)

6 Months Ended

Jun. 30, 2017

Other Liabilities Disclosure [Abstract]

Schedule of Other Noncurrent Liabilities

The components of other noncurrent liabilities as of June 30, 2017 and December 31, 2016 were:

	June 30, 2017		December 31, 2016
Pension and retiree medical obligations	$	100,762	$	93,604
Liability for uncertain tax positions	1,872		2,623
Deferred revenue	2,167		2,442
Other	18,076		22,561
Total other noncurrent liabilities	$	122,877	$	121,230