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Note 15 - Stockholders' Equity - Stockholders' Equity Transactions (Details) - USD ($)
$ in Thousands

3 Months Ended

6 Months Ended

Jun. 30, 2019

Jun. 30, 2018

Jun. 30, 2019

Jun. 30, 2018

Balances

$ 83,441

$ 79,776

^[1]

Exercise of Stock options (in shares)

25,316

16,153

54,359

28,716

Exercise of Stock options

$ 123

$ 194

Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration

(184)

(524)

Stock-based compensation

685

1,210

Net income

2,616

$ 3,608

^[2],[3]

5,415

^[3]

$ 7,352

^[2],[3]

Other comprehensive income (loss)

320

$ (260)

930

$ (243)

Balances

$ 87,001

$ 87,001

Common Stock [Member]

Balances (in shares)

10,643,750

10,627,988

Balances

$ 16,188

$ 15,823

Exercise of Stock options (in shares)

25,316

54,359

Exercise of Stock options

$ 273

$ 638

Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration (in shares)

(5,604)

(18,885)

Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration

Stock-based compensation

Other comprehensive income (loss)

Balances (in shares)

10,663,462

10,663,462

Balances

$ 16,461

$ 16,461

Additional Paid-in Capital [Member]

Balances

3,844

3,953

Exercise of Stock options

(150)

(444)

Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration

(184)

(524)

Stock-based compensation

685

1,210

Other comprehensive income (loss)

Balances

4,195

4,195

Retained Earnings [Member]

Balances

63,609

60,810

Exercise of Stock options

Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration

Stock-based compensation

Net income

2,616

5,415

Other comprehensive income (loss)

Balances

66,225

66,225

AOCI Attributable to Parent [Member]

Balances

(200)

(810)

Exercise of Stock options

Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration

Stock-based compensation

Other comprehensive income (loss)

320

930

Balances

$ 120

$ 120

[1]	The Company has initially applied ASC 2016-02 (Topic 842) using the modified retrospective method. Under this method, the comparative information is not restated.
[2]	The Company has initially applied ASC 2016-02 (Topic 842) using the modified retrospective method. Under this method, the comparative information is not restated.
[3]	The Company has initially applied ASC 2016-02 (Topic 842) using the modified retrospective method. Under this method, the comparative information is not restated.

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