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Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands | Total | Common Class A [Member] | Share Capital | Share Capital Common Class A [Member] | Contributed Capital | Retained Earnings | Accumulated Other Comprehensive Income (Loss) | Parent | Non-Controlling Interest
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Stockholders' Equity Attributable to Parent |  |  | $ 58,492 |  | $ 36,546 | $ 426,930 | $ 1,582 |  |
Dividends |  | $ 0.44 |  |  |  | $ 0.44 |  |  |
Balance at beginning of year at Dec. 31, 2017 |  |  |  |  |  |  |  |  | $ 361
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Issuance of Class A non-voting common stock | $ 724 |  |  | $ 794 |  |  |  |  |
Repurchase of Class A non-voting common stock for cancellation |  |  |  | (5,894) |  |  |  |  |
Share-based expense |  |  |  |  | 6,061 |  |  |  |
Vested employee share plan awards |  |  |  |  | (831) |  |  |  |
Net Income (Loss) Attributable to Parent | 28,892 |  |  |  |  | $ 28,892 |  |  |
Dividends paid ($0.44 per share for the years 2012, 2013 & 2014) |  |  |  |  |  | (5,833) |  |  |
Adjustments to Additional Paid in Capital, Other |  |  |  |  |  | (314) |  |  |
Currency translation adjustment | (1,417) |  |  |  |  |  | (1,417) |  |
Less net income (loss) attributable to non-controlling interest, net of tax |  |  |  |  |  |  |  |  | (16)
Dividends paid to non-controlling interest | 372 |  |  |  |  |  |  |  | (345)
Balance at end of year at Dec. 31, 2018 | $ 545,322 |  |  |  |  |  |  |  | 0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Stockholders' Equity Attributable to Parent |  |  | 53,392 |  | 41,776 | $ 449,989 | 165 | $ 545,322 |
Non-controlling interest |  |  |  |  |  |  |  |  | 0
Dividends | $ 0.46 | 0.46 |  |  |  | $ 0.46 |  |  |
Issuance of Class A non-voting common stock | $ 2,192 |  |  | 1,565 |  |  |  |  |
Repurchase of Class A non-voting common stock for cancellation |  |  |  | (8,400) |  |  |  |  |
Share-based expense |  |  |  |  | 8,128 |  |  |  |
Vested employee share plan awards |  |  |  |  | (2,498) |  |  |  |
Net Income (Loss) Attributable to Parent | 52,953 |  |  |  |  | $ 52,953 |  |  |
Dividends paid ($0.44 per share for the years 2012, 2013 & 2014) |  |  |  |  |  | (5,944) |  |  |
Adjustments to Additional Paid in Capital, Other |  |  |  |  |  | 0 |  |  |
Currency translation adjustment | 1,596 |  |  |  |  |  | 1,596 |  |
Less net income (loss) attributable to non-controlling interest, net of tax |  |  |  |  |  |  |  |  | 0
Dividends paid to non-controlling interest | 0 |  |  |  |  |  |  |  | 0
Balance at end of year at Dec. 31, 2019 |  |  |  |  |  |  |  |  | 0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Stockholders' Equity Attributable to Parent | $ 592,722 |  | 46,557 |  | 47,406 | $ 496,998 | 1,761 | 592,722 |
Non-controlling interest |  |  |  |  |  |  |  |  | 0
Dividends | $ 1.48 | $ 1.48 |  |  |  | $ 1.48 |  |  |
Issuance of Class A non-voting common stock | $ 12,167 |  |  | 7,824 |  |  |  |  |
Repurchase of Class A non-voting common stock for cancellation |  |  |  | $ (15,048) |  |  |  |  |
Share-based expense |  |  |  |  | 7,683 |  |  |  |
Vested employee share plan awards |  |  |  |  | (13,608) |  |  |  |
Net Income (Loss) Attributable to Parent | 122,986 |  |  |  |  | $ 122,986 |  |  |
Dividends paid ($0.44 per share for the years 2012, 2013 & 2014) |  |  |  |  |  | (18,578) |  |  |
Adjustments to Additional Paid in Capital, Other |  |  |  |  |  | 0 |  |  |
Currency translation adjustment | 1,687 |  |  |  |  |  | 1,687 |  |
Less net income (loss) attributable to non-controlling interest, net of tax |  |  |  |  |  |  |  |  | 0
Dividends paid to non-controlling interest | 0 |  |  |  |  |  |  |  | 0
Stockholders' Equity Attributable to Parent | $ 685,668 |  | $ 39,333 |  | $ 41,481 | $ 601,406 | $ 3,448 | $ 685,668 |
Non-controlling interest |  |  |  |  |  |  |  |  | $ 0

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