Pledged Assets (Tables)

12 Months Ended

Mar. 31, 2011

Pledged Assets (Tables) [Abstract]

Assets pledged as collateral for long term debt and guarantees for debt

			Thousands of
	Millions of yen		U.S. dollars
Cash and cash equivalents	¥	2	$	24
Other current assets		2,574		31,012
Total	¥	2,576	$	31,036

			Thousands of
	Millions of yen		U.S. dollars
Guarantees for debt	¥	2,576	$	31,036
Total	¥	2,576	$	31,036