Summary Of Accounting Policies (Schedule Of Goodwill) (Details) (USD $)	12 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Summary Of Accounting Policies [Abstract]
Balance, beginning of the year, net of accumulated impairment of $5,949,977	$ 93,207,000		$ 84,360,000
Additions	8,607,000	[1]	7,119,000	[1]
Purchase accounting adjustments and reclassification to other intangibles	601,000	[2]	1,170,000	[2]
Foreign currency translation adjustments	(745,000)		558,000
Balance, end of period, net of accumulated impairment of $5,949,977	101,670,000		93,207,000
Accumulated impairment	$ 5,949,977

[1] For fiscal years 2012 and 2011, additions were attributable to certain acquisitions that were not individually, nor in the aggregate, significant to the Company. Refer to the discussion of the Company's acquisitions in note 15, "Business and Asset Acquisitions and Divestitures."

[2] Includes adjustments and reclassifications resulting from management's review and finalization of the valuation of assets and liabilities acquired through certain business combinations completed in a period subsequent to the respective acquisition, based on management's estimates and were not individually, nor in the aggregate, significant to the Company.