Inventories

Inventories as of December 31, 2017 and 2016 were as follows:



	December 31,
In thousands	2017			2016
Raw materials	$	28,672		$	24,518
Work in process	29,427			17,161
Finished goods	23,901			25,360
	82,000			67,039
Less: Progress billings	(1,661		)	(893		)
Total inventories	$	80,339		$	66,146

Included in work in process is gross tooling inventory of $20.2 million and $10.3 million at December 31, 2017 and 2016, respectively. Tooling inventory, net of progress billings, was $18.5 million and $9.4 million at December 31, 2017 and 2016, respectively.