5. Inventories

Inventories consist of the following (in thousands):

	June 30, 2018			September 30, 2017
Finished goods	$	22,880		$	33,690
Work in process		8,045			2,512
Raw material		54,403			70,099
Obsolescence reserve		(31,014	)		(29,614	)
		54,314			76,687
Less current portion		(18,959	)		(20,752	)
Non-current portion	$	35,355		$	55,935

During the nine months ended June 30, 2018 and 2017, the Company made non-cash inventory transfers of $23.5 million and $1.6 million, respectively, to rental equipment. Raw materials include semi-finished goods and component parts which totaled approximately $28.7 million and $48.2 million at June 30, 2018 and September 30, 2017, respectively.