Inventories

12 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Inventories

3 Inventories

The components of inventories are as follows:

	March 31,
	2018		2019
	$ in thousands		$ in thousands
Raw materials		275		297
Work in progress		237		218
Finished goods		500		314
		1,012		829

During the fiscal years ended March 31, 2017, 2018 and 2019, based upon material composition and expected usage, provisions for inventories of approximately $156,000, $569,000 and $73,000, respectively, were charged to the consolidated statements of operations under cost of revenue.