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Note 10 - Subsequent Events	9 Months Ended
	Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Note 10 - Subsequent Event In January 2015, our Board of Directors declared a quarterly cash dividend of $0.16 per share of common stock, payable on March 16, 2015, to shareholders of record at the close of business on February 27, 2015. Net cash provided by operating activities for the nine months ended December 31, 2014 decreased primarily due to increases in accounts receivable and inventories resulting from the BGI, Amilabo, Amega, TempSys and PCD acquisitions and the payment of accrued liabilities and taxes payable, partially offset by decreases in payments of accounts payable and increases in net income and depreciation and amortization.

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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.

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