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Note 6 - Changes in Shareholders' Equity and Comprehensive Income - Schedule of Changes in Shareholders' Equity and Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Balance			$ 93,366
Net income	$ 9,064	$ 4,823	27,100	$ 16,316
Balance	109,981		109,981
Additional Paid-in Capital [Member]
Balance			6,806
Share based compensation			1,858
Dividends declared
Net income
Balance	8,664		8,664
Retained Earnings [Member]
Balance			86,530
Share based compensation
Dividends declared			(12,343)
Net income			27,100
Balance	$ 101,287		$ 101,287

X

- Definition

Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation.

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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