Inventories

12 Months Ended

Mar. 31, 2021

Inventory Disclosure [Abstract]

Inventories

3 Inventories

The components of inventories are as follows:

	March 31,
	2020		2021
	$ in thousands		$ in thousands
Raw materials		357		267
Work in progress		429		391
Finished goods		392		439
		1,178		1,097

During the fiscal years ended March 31, 2019, 2020 and 2021, based upon material composition and expected usage, provisions for inventories of approximately $73,000, $87,000 and $108,000, respectively, were charged to the consolidated statements of operations under cost of revenue.