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Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands | Total | Divestiture [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings (Loss) [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Accumulated Other Comprehensive Income (Loss) [Member] Divestiture [Member] | Treasury Stock [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2016 | $ 190,082 |  | $ 343 | $ 244,878 | $ (41,741) | $ (13,042) |  | $ (356)
Beginning Balance, Shares at Dec. 31, 2016 |  |  | 34,300 |  |  |  |  | (138)
Net income (loss) | (3,029) |  |  |  | (3,029) |  |  |
Cumulative effect adjustment | ASU 2016-09 [Member] | 66 |  |  | 177 | (111) |  |  |
Common stock dividends | (7,792) |  |  |  | (7,792) |  |  |
Exercise of stock options and dividend reinvestment issuances | $ 1,295 |  | $ 3 | 1,292 |  |  |  |
Exercise of stock options and dividend reinvestment issuances, Shares | 292 |  | 291 |  |  |  |  |
Restricted stock units issued | $ (135) |  | $ (1) | (136) |  |  |  |
Restricted stock units issued, Shares |  |  | 92 |  |  |  |  |
Share based compensation earned | 1,959 |  |  | 1,959 |  |  |  |
Share based compensation earned, Shares |  |  | 25 |  |  |  |  |
Adjustment for minimum pension liability, net of tax | (78) |  |  |  |  | (78) |  |
Interest rate swap | 180 |  |  |  |  | 180 |  |
Translation income (loss) | 4,021 |  |  |  |  | 4,021 |  |
Ending Balance at Dec. 31, 2017 | 186,569 |  | $ 347 | 248,170 | (52,673) | (8,919) |  | $ (356)
Ending Balance, Shares at Dec. 31, 2017 |  |  | 34,708 |  |  |  |  | (138)
Translation (loss) gain, beginning balance at Dec. 31, 2016 | (8,271) |  |  |  |  |  |  |
Translation (loss) gain, ending balance at Dec. 31, 2017 | (4,250) |  |  |  |  |  |  |
Interest rate swap adjustment beginning balance at Dec. 31, 2016 | 312 |  |  |  |  |  |  |
Interest rate swap adjustment ending balance at Dec. 31, 2017 | 492 |  |  |  |  |  |  |
Minimum pension liability adjustment beginning balance at Dec. 31, 2016 | (5,083) |  |  |  |  |  |  |
Minimum pension liability adjustment, ending balance at Dec. 31, 2017 | (5,161) |  |  |  |  |  |  |
Accumulated other comprehensive loss, beginning balance at Dec. 31, 2016 | (13,042) |  |  |  |  |  |  |
Accumulated other comprehensive loss, activity | 4,123 |  |  |  |  |  |  |
Accumulated other comprehensive loss, ending balance at Dec. 31, 2017 | (8,919) |  |  |  |  |  |  |
Net income (loss) | (7,121) |  |  |  | (7,121) |  |  |
Cumulative effect adjustment | ASU 2018-02 [Member] | (30) |  |  |  | 1,037 | (1,067) |  |
Cumulative effect adjustment | ASU 2014-09 [Member] | (622) |  |  |  | (622) |  |  |
Cumulative translation adjustment for divestiture |  | $ 375 |  |  |  |  | $ 375 |
Exercise of stock options and dividend reinvestment issuances | $ 89 |  |  | 89 |  |  |  |
Exercise of stock options and dividend reinvestment issuances, Shares | 16 |  | 16 |  |  |  |  |
Restricted stock units issued | $ (253) |  | $ 2 | (207) | 48 |  |  |
Restricted stock units issued, Shares |  |  | 192 |  |  |  |  |
Share based compensation earned | 3,357 |  |  | 3,357 |  |  |  |
Share based compensation earned, Shares |  |  | 38 |  |  |  |  |
Adjustment for minimum pension liability, net of tax | (22) |  |  |  |  | (22) |  |
Interest rate swap | 76 |  |  |  |  | 76 |  |
Translation income (loss) | (3,858) |  |  |  |  | (3,858) |  |
Ending Balance at Dec. 31, 2018 | 178,560 |  | $ 349 | 251,409 | (59,427) | (13,415) |  | $ (356)
Ending Balance, Shares at Dec. 31, 2018 |  |  | 34,954 |  |  |  |  | (138)
Translation (loss) gain, ending balance at Dec. 31, 2018 | (7,733) |  |  |  |  |  |  |
Interest rate swap adjustment ending balance at Dec. 31, 2018 | 563 |  |  |  |  |  |  |
Cumulative effect adjustment for interest rate swap | ASU 2018-02 [Member] | (5) |  |  |  |  |  |  |
Minimum pension liability adjustment, ending balance at Dec. 31, 2018 | (6,245) |  |  |  |  |  |  |
Minimum pension liability adjustment, cumulative translation adjustment | ASU 2018-02 [Member] | (1,062) |  |  |  |  |  |  |
Accumulated other comprehensive loss, activity | (3,804) |  |  |  |  |  |  |
Accumulated other comprehensive loss, ending balance at Dec. 31, 2018 | (13,415) |  |  |  |  |  |  |
Accumulated other comprehensive loss, cumulative translation adjustment |  | $ 375 |  |  |  |  |  |
Accumulated other comprehensive loss, cumulative translation adjustment | ASU 2018-02 [Member] | (1,067) |  |  |  |  |  |  |
Net income (loss) | 17,707 |  |  |  | 17,707 |  |  |
Cumulative effect adjustment | Accounting Standards Update 2017-12 |  |  |  |  | (11) | 11 |  |
Cumulative effect adjustment | Accounting Standards Update 2016-02 | $ (4,590) |  |  |  | (4,590) |  |  |
Exercise of stock options and dividend reinvestment issuances, Shares | 66 |  | 31 |  |  |  |  |
Restricted stock units issued | $ (447) |  | $ 3 | (427) | 23 |  |  |
Restricted stock units issued, Shares |  |  | 255 |  |  |  |  |
Share based compensation earned | 2,888 |  | $ 1 | 2,887 |  |  |  |
Share based compensation earned, Shares |  |  | 35 |  |  |  |  |
Adjustment for minimum pension liability, net of tax | (184) |  |  |  |  | (184) |  |
Interest rate swap | (574) |  |  |  |  | (574) |  |
Translation income (loss) | (343) |  |  |  |  | (343) |  |
Ending Balance at Dec. 31, 2019 | 193,017 |  | $ 353 | $ 253,869 | $ (46,344) | $ (14,505) |  | $ (356)
Ending Balance, Shares at Dec. 31, 2019 |  |  | 35,275 |  |  |  |  | (138)
Translation (loss) gain, ending balance at Dec. 31, 2019 | (8,076) |  |  |  |  |  |  |
Cumulative effect adjustment for interest rate swap | Accounting Standards Update 2017-12 | 11 |  |  |  |  |  |  |
Minimum pension liability adjustment, ending balance at Dec. 31, 2019 | (6,429) |  |  |  |  |  |  |
Accumulated other comprehensive loss, activity | (1,101) |  |  |  |  |  |  |
Accumulated other comprehensive loss, ending balance at Dec. 31, 2019 | (14,505) |  |  |  |  |  |  |
Accumulated other comprehensive loss, cumulative translation adjustment | Accounting Standards Update 2017-12 | $ 11 |  |  |  |  |  |  |

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