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Consolidated Statements Of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Retained Earnings | Accumulated Other Comprehensive Income | Noncontrolling Interest [Member]
--- | --- | --- | --- | --- | ---
Balance, beginning of year, shares at Dec. 31, 2017 |  | 1,886 |  |  |
Balance, beginning of year at Dec. 31, 2017 | $ 177,921 | $ 0 | $ 161,891 | $ 15,945 | $ 85
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income attributable to the Company | 11,123 |  | 11,123 |  |
Dividends paid | (1,509) |  | (1,509) |  |
Shares of common stock repurchased and retired (in shares) |  | 0 |  |  |
Shares of common stock repurchased and retired | (29) |  | 29 |  |
Stock options and stock appreciation rights exercised (in shares) |  | 1 |  |  |
Stock options and stock appreciation rights exercised | (1) |  | (1) |  |
Share-based compensation expense related to stock appreciation rights | 150 |  | 150 |  |
Cumulative effect adjustment for adoption of new accounting standards | 0 |  | 13,627 | (13,627) |
Net unrealized gain (loss) on investments | (1,512) |  |  | (1,512) |
Net loss attributable to noncontrolling interests | (30) |  |  |  | (30)
Balance, end of year, shares at Jun. 30, 2018 |  | 1,887 |  |  |
Balance, end of year at Jun. 30, 2018 | 186,113 | $ 0 | 185,252 | 806 | 55
Balance, beginning of year, shares at Mar. 31, 2018 |  | 1,887 |  |  |
Balance, beginning of year at Mar. 31, 2018 | 180,062 | $ 0 | 178,971 | 1,009 | 82
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income attributable to the Company | 6,947 |  | 6,947 |  |
Dividends paid | (754) |  | (754) |  |
Shares of common stock repurchased and retired (in shares) |  | 0 |  |  |
Shares of common stock repurchased and retired | 0 |  | 0 |  |
Stock options and stock appreciation rights exercised (in shares) |  | 0 |  |  |
Stock options and stock appreciation rights exercised | 0 |  | 0 |  |
Share-based compensation expense related to stock appreciation rights | 88 |  | 88 |  |
Cumulative effect adjustment for adoption of new accounting standards | 0 |  | 0 | 0 |
Net unrealized gain (loss) on investments | (203) |  |  | (203) |
Net loss attributable to noncontrolling interests | (27) |  |  |  | (27)
Balance, end of year, shares at Jun. 30, 2018 |  | 1,887 |  |  |
Balance, end of year at Jun. 30, 2018 | 186,113 | $ 0 | 185,252 | 806 | 55
Balance, beginning of year, shares at Dec. 31, 2018 |  | 1,887 |  |  |
Balance, beginning of year at Dec. 31, 2018 | 175,639 | $ 0 | 174,690 | 949 | 0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income attributable to the Company | 12,126 |  | 12,126 |  |
Dividends paid | (1,511) |  | (1,511) |  |
Shares of common stock repurchased and retired (in shares) |  | 0 |  |  |
Shares of common stock repurchased and retired | (11) |  | 11 |  |
Stock options and stock appreciation rights exercised (in shares) |  | 2 |  |  |
Stock options and stock appreciation rights exercised | 0 |  | 0 |  |
Share-based compensation expense related to stock appreciation rights | 147 |  | 147 |  |
Net unrealized gain (loss) on investments | 1,905 |  |  | 1,905 |
Net loss attributable to noncontrolling interests | 0 |  |  |  |
Balance, end of year, shares at Jun. 30, 2019 |  | 1,889 |  |  |
Balance, end of year at Jun. 30, 2019 | 188,295 | $ 0 | 185,441 | 2,854 | 0
Balance, beginning of year, shares at Mar. 31, 2019 |  | 1,889 |  |  |
Balance, beginning of year at Mar. 31, 2019 | 182,729 | $ 0 | 180,637 | 2,092 | 0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income attributable to the Company | 5,500 |  | 5,500 |  |
Dividends paid | (756) |  | (756) |  |
Shares of common stock repurchased and retired (in shares) |  | 0 |  |  |
Shares of common stock repurchased and retired | 0 |  | 0 |  |
Stock options and stock appreciation rights exercised (in shares) |  | 0 |  |  |
Stock options and stock appreciation rights exercised | 1 |  | 1 |  |
Share-based compensation expense related to stock appreciation rights | 59 |  | 59 |  |
Net unrealized gain (loss) on investments | 762 |  |  | 762 |
Net loss attributable to noncontrolling interests | 0 |  |  |  |
Balance, end of year, shares at Jun. 30, 2019 |  | 1,889 |  |  |
Balance, end of year at Jun. 30, 2019 | $ 188,295 | $ 0 | $ 185,441 | $ 2,854 | $ 0

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