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Note 11 - Subsequent Event	6 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Subsequent Events [Text Block]	Note 1 1 . Subsequent Event In October 2018, we announced that our Board of Directors declared a quarterly cash dividend of $0.16 per share of common stock, payable on December 17, 2018 , to shareholders of record at the close of business on November 30, 2018 .

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

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