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v3.19.1

Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands | Total | Common stock | Additional paid-in capital | Treasury stock | Retained earnings | Accumulated other comprehensive income / (loss)
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2017 | $ 1,409,016 | $ 1,163 | $ 1,195,339 | $ (134,293) | $ 438,774 | $ (91,967)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Stock-based compensation expense | 5,302 |  | 5,302 |  |  |
Restricted stock issuance, net of forfeitures | (1,607) | 4 | (1,611) |  |  |
Issuance of performance shares | (273) | 2 | (275) |  |  |
Shares issued in employee stock purchase plan | 996 | 1 | 995 |  |  |
Contingent shares issued for acquisition of Cooper | 125 |  | 125 |  |  |
Treasury stock | (66) |  |  | (66) |  |
Currency translation adjustment | 6,287 |  |  |  |  | 6,287
Change in pension liability | 16 |  |  |  |  | 16
Net income (loss) | 28,066 |  |  |  | 28,066 |
Balance at Mar. 31, 2018 | 1,446,856 | 1,170 | 1,199,875 | (134,359) | 465,834 | (85,664)
Balance at Dec. 31, 2018 | 1,030,126 | 1,174 | 1,214,928 | (134,434) | 63,688 | (115,230)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Stock-based compensation expense | 3,910 |  | 3,910 |  |  |
Restricted stock issuance, net of forfeitures | (925) | 6 | (931) |  |  |
Shares issued in employee stock purchase plan | 684 | 2 | 682 |  |  |
Contingent shares issued for acquisition of Cooper | 375 | 1 | 374 |  |  |
Treasury stock | (48) |  |  | (48) |  |
Currency translation adjustment | 4,834 |  |  |  |  | 4,834
Change in pension liability | (9) |  |  |  |  | (9)
Net income (loss) | (7,888) |  |  |  | (7,888) |
Balance at Mar. 31, 2019 | $ 1,031,059 | $ 1,183 | $ 1,218,963 | $ (134,482) | $ 55,800 | $ (110,405)

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