Inventories

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



In thousands	March 31, 2017			December 31, 2016
Raw materials	$	29,031		$	24,518
Work in process	23,152			17,161
Finished goods	27,193			25,360
	79,376			67,039
Less: Progress billings	(1,252		)	(893		)
Total inventories	$	78,124		$	66,146

Included in work in process is gross tooling inventory of $15.2 million and $10.3 million at March 31, 2017 and December 31, 2016, respectively. Tooling inventory, net of progress billings, was $14.0 million and $9.4 million at March 31, 2017 and December 31, 2016, respectively.