Summary of Significant Accounting Policies (Financing Receivables) (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Credit quality of the Company's financing receivables using Aging Analysis
Total gross sales-type leases	$ 11,394	$ 18,721
Allowance	(505)	(458)
Total net sales-type leases	10,889	18,263
Allowance for Doubtful Accounts Receivable [Roll Forward]
Provisions charged to expense	575	285	$ 174
Not Past Due
Credit quality of the Company's financing receivables using Aging Analysis
Lease balances included in consolidated accounts receivable—current	294	1,346
Lease balances included in consolidated accounts receivable—long-term	101	398
Total gross sales-type leases	395	1,744
Allowance	0	(12)
Total net sales-type leases	395	1,732
1-90 days past due
Credit quality of the Company's financing receivables using Aging Analysis
Lease balances included in consolidated accounts receivable—current	4	47
Lease balances included in consolidated accounts receivable—long-term	0	0
Total gross sales-type leases	4	47
Allowance	0	(3)
Total net sales-type leases	4	44
Greater than 90 days past due
Credit quality of the Company's financing receivables using Aging Analysis
Lease balances included in consolidated accounts receivable—current	10	186
Lease balances included in consolidated accounts receivable—long-term	0	0
Total gross sales-type leases	10	186
Allowance	(9)	(141)
Total net sales-type leases	1	45
Total past due
Credit quality of the Company's financing receivables using Aging Analysis
Lease balances included in consolidated accounts receivable—current	14	233
Lease balances included in consolidated accounts receivable—long-term	0	0
Total gross sales-type leases	14	233
Allowance	(9)	(144)
Total net sales-type leases	5	89
Total sales-type leases
Credit quality of the Company's financing receivables using Aging Analysis
Lease balances included in consolidated accounts receivable—current	308	1,579
Lease balances included in consolidated accounts receivable—long-term	101	398
Total gross sales-type leases	409	1,977
Allowance	(9)	(156)
Total net sales-type leases	400	1,821
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts on financing receivables, beginning of period	156	94	74
Provisions charged to expense	30	62	96
Write offs and other	177	0	76
Allowance for doubtful accounts on financing receivables, end of period	$ 9	$ 156	$ 94

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