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Note 14 - Stockholders' Equity - Stockholders' Equity Transactions (Details) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2019

Sep. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Balances

$ 87,001

$ 79,776

^[1]

Exercise of Stock options (in shares)

12,260

15,782

66,619

44,498

Exercise of Stock options

$ 118

$ 312

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

(20)

(544)

Repurchase of common stock

(4,986)

(4,986)

Stock-based compensation

830

2,040

Net income

4,205

$ 5,346

^[2],[3]

9,620

$ 12,699

^[2],[3]

Other comprehensive income (loss)

(149)

$ 207

^[3]

781

$ (36)

^[3]

Balances

$ 86,999

$ 86,999

Common Stock [Member]

Balances (in shares)

10,663,462

10,627,988

Balances

$ 16,461

$ 15,823

Exercise of Stock options (in shares)

12,260

66,619

Exercise of Stock options

$ 189

$ 827

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

(1,837)

(20,722)

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

Repurchase of common stock (in shares)

(101,816)

(101,816)

Repurchase of common stock

$ (158)

$ (158)

Stock-based compensation

Other comprehensive income (loss)

Balances (in shares)

10,572,069

10,572,069

Balances

$ 16,492

$ 16,492

Additional Paid-in Capital [Member]

Balances

4,195

3,953

Exercise of Stock options

(71)

(515)

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

(20)

(544)

Repurchase of common stock

(4,828)

(4,828)

Stock-based compensation

830

2,040

Other comprehensive income (loss)

Balances

106

106

Retained Earnings [Member]

Balances

66,225

60,810

Exercise of Stock options

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

Repurchase of common stock

Stock-based compensation

Net income

4,205

9,620

Other comprehensive income (loss)

Balances

70,430

70,430

AOCI Attributable to Parent [Member]

Balances

120

(810)

Exercise of Stock options

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

Repurchase of common stock

Stock-based compensation

Other comprehensive income (loss)

(149)

781

Balances

$ (29)

$ (29)

[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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