Schedule II - Valuation and Qualifying Accounts and Reserves (Details) - USD ($)		12 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	[1]	$ 247,000	$ 182,000	$ 319,000
Additions charged to expenses	[1]	366,000	(24,000)	182,000
Deductions from reserves	[1],[2]	(134,000)	89,000	(319,000)
Balance at end of period	[1]	$ 479,000	$ 247,000	$ 182,000

[1] The reserve for doubtful accounts and sales allowance is presented on a consolidated basis.

[2] The deductions related to allowances for doubtful accounts represent net balance of accounts receivable which were written off and recovered.