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CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Retained Earnings | Other Cumulative Comprehensive Loss | Treasury Stock and Company Stock Held for Deferred Compensation
--- | --- | --- | --- | --- | --- | ---
Balances (in shares) at Dec. 31, 2017 |  | 14,821,801 |  |  |  | 39,783
Balances at Dec. 31, 2017 | $ 105,780 | $ 741 | $ 76,146 | $ 60,074 | $ (30,819) | $ (362)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income | 15,202 |  |  | 15,202 |  |
Change in cumulative foreign currency translation adjustment | (2,987) |  |  |  | (2,987) |
Shares issued in connection with stock compensation plans (in shares) |  | 156,378 |  |  |  |
Shares issued in connection with stock compensation plans | 232 | $ 8 | 224 |  |  |
Stock-based compensation | 2,574 |  | 2,574 |  |  |
Dividends declared | (893) |  |  | (893) |  |
Treasury stock activity and transfers of stock to rabbi trust | (453) |  |  |  |  | $ (453)
Treasury stock activity and transfers of stock to rabbit trust (in shares) |  |  |  |  |  | (42,353)
Balances (in shares) at Sep. 30, 2018 |  | 14,978,179 |  |  |  | 82,136
Balances at Sep. 30, 2018 | 119,390 | $ 749 | 78,944 | 74,318 | (33,806) | $ (815)
Balances (in shares) at Jun. 30, 2018 |  | 14,973,179 |  |  |  | 73,452
Balances at Jun. 30, 2018 | 114,229 | $ 749 | 78,089 | 69,706 | (33,570) | $ (745)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income | 4,910 |  |  | 4,910 |  |
Change in cumulative foreign currency translation adjustment | (236) |  |  |  | (236) |
Shares issued in connection with stock compensation plans (in shares) |  | 5,000 |  |  |  |
Shares issued in connection with stock compensation plans | 0 |  |  |  |  |
Stock-based compensation | 855 |  | 855 |  |  |
Dividends declared | (298) |  |  | (298) |  |
Treasury stock activity and transfers of stock to rabbi trust | (70) |  |  |  |  | $ (70)
Treasury stock activity and transfers of stock to rabbit trust (in shares) |  |  |  |  |  | (8,684)
Balances (in shares) at Sep. 30, 2018 |  | 14,978,179 |  |  |  | 82,136
Balances at Sep. 30, 2018 | 119,390 | $ 749 | 78,944 | 74,318 | (33,806) | $ (815)
Balances (in shares) at Dec. 31, 2018 |  | 14,987,962 |  |  |  | 82,186
Balances at Dec. 31, 2018 | 134,286 | $ 749 | 80,077 | 89,291 | (35,014) | $ (817)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income | 39,329 |  |  | 39,329 |  |
Change in cumulative foreign currency translation adjustment | (1,577) |  |  |  | (1,577) |
Shares issued in connection with stock compensation plans (in shares) |  | 121,702 |  |  |  | 7,502
Shares issued in connection with stock compensation plans | 358 | $ 7 | 351 |  |  |
Stock-based compensation | 3,756 |  | 3,756 |  |  |
Dividends declared | (2,464) |  |  | (2,464) |  |
Treasury stock activity and transfers of stock to rabbi trust | (6,612) |  | 14 |  |  | $ (6,626)
Treasury stock activity and transfers of stock to rabbit trust (in shares) |  |  |  |  |  | (389,645)
Balances (in shares) at Sep. 30, 2019 |  | 15,109,664 |  |  |  | 464,329
Balances at Sep. 30, 2019 | 167,076 | $ 756 | 84,198 | 126,156 | (36,591) | $ (7,443)
Balances (in shares) at Jun. 30, 2019 |  | 15,107,914 |  |  |  | 460,823
Balances at Jun. 30, 2019 | 163,501 | $ 756 | 82,853 | 121,107 | (33,895) | $ (7,320)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income | 6,915 |  |  | 6,915 |  |
Change in cumulative foreign currency translation adjustment | (2,696) |  |  |  | (2,696) |
Shares issued in connection with stock compensation plans (in shares) |  | 1,750 |  |  |  |
Shares issued in connection with stock compensation plans | 0 |  |  |  |  |
Stock-based compensation | 1,345 |  | 1,345 |  |  |
Dividends declared | (1,866) |  |  | (1,866) |  |
Treasury stock activity and transfers of stock to rabbi trust | (123) |  |  |  |  | $ (123)
Treasury stock activity and transfers of stock to rabbit trust (in shares) |  |  |  |  |  | (3,506)
Balances (in shares) at Sep. 30, 2019 |  | 15,109,664 |  |  |  | 464,329
Balances at Sep. 30, 2019 | $ 167,076 | $ 756 | $ 84,198 | $ 126,156 | $ (36,591) | $ (7,443)

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