5.	Inventories

Inventories consisted of the following:

(Table only in thousands)	2017			2016
Raw materials	$	18,444		$	17,889
Work in process		3,182			3,986
Finished goods		940			1,508
Obsolescence allowance		(1,597	)		(1,896	)
Total inventories	$	20,969		$	21,487

Amounts credited to the allowance for obsolete inventory and charged to cost of sales amounted to $(0.2) million, $(1.2) million and $(0.7) million during 2017, 2016 and 2015, respectively. Items charged to the allowance for inventory write-offs were $0.6 million, $0.2 million and $0.2 million, during 2017, 2016 and 2015, respectively.