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Note 6 - Changes in Shareholders' Equity - Schedule of Changes in Shareholders' Equity and Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Beginning balance at March 31, 2017:	$ 93,366
Net income	9,276	$ 6,594
Ending balance at June 30, 2017:	99,031
Additional Paid-in Capital [Member]
Beginning balance at March 31, 2017:	6,806
Share based compensation	494
Dividends declared
Net income
Ending balance at June 30, 2017:	7,300
Retained Earnings [Member]
Beginning balance at March 31, 2017:	86,530
Share based compensation
Dividends declared	(4,105)
Net income	9,276
Ending balance at June 30, 2017:	$ 91,701

X

- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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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).

+ References

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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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