Accumulated Other Comprehensive Loss (Details) (USD $)	3 Months Ended	6 Months Ended
Sep. 30, 2013	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of beginning of period	$ (834,000)	$ (846,000)
Other comprehensive income (loss), net of tax	(10,000)	2,000
Amounts reclassified from other comprehensive income (loss), net of tax	0	0
Balance as of end of period	(844,000)	(844,000)
Unrealized gain on Short-Term Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of beginning of period	287,000	287,000
Other comprehensive income (loss), net of tax	14,000	14,000
Amounts reclassified from other comprehensive income (loss), net of tax	0	0
Balance as of end of period	301,000	301,000
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of beginning of period	(1,121,000)	(1,133,000)
Other comprehensive income (loss), net of tax	(24,000)	(12,000)
Amounts reclassified from other comprehensive income (loss), net of tax	0	0
Balance as of end of period	$ (1,145,000)	$ (1,145,000)

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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