Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Debt Securities, Available-for-sale	$ 15,523	$ 16,181
Marketable Equity Securities	12,736
Marketable Equity Securities		10,405
Equity Method Investments	18,888	18,853
Investments	47,147	$ 45,439
Payments to acquire interest in joint venture	$ 15,000

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Sum of the carrying amounts as of the balance sheet date of all investments.

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Amount of investment in equity method investee and investment in and advance to affiliate.

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Amount of investment in marketable security.

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