Inventories

The components of inventories were:



	October 31,			April 30,
(in thousands)	2017			2017
Raw materials	$	21,989		$	18,230
Work-in-process	18,605			18,704
Finished goods	19,576			19,372

Total FIFO inventories	60,170			56,306

Reserve to adjust inventories to LIFO value	(13,447		)	(13,447		)

Total LIFO inventories	$	46,723		$	42,859

Interim LIFO calculations are based on management’s estimates of expected year-end inventory levels and costs. Since these items are estimated, interim results are subject to the final year-end LIFO inventory valuation.