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Consolidated Statements Of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands | Common Stock [Member] | Additional Paid-In Capital [Member] | Accumulated Deficit [Member] | Treasury Stock [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Total
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2014 | $ 3 | $ 482,985 | $ (223,197) | $ (186) | $ (2,412) | $ 257,193
Balance, shares at Dec. 31, 2014 | 32,801 |  |  | (97) |  |
Net loss |  |  | (77,542) |  |  | (77,542)
Other comprehensive income (loss) |  |  |  |  | 1,202 | 1,202
Purchase of treasury stock, value |  |  |  | $ (7,134) |  | (7,134)
Purchase of treasury stock, shares |  |  |  | (1,584) |  |
Issuance of common stock under stock incentive plans, net, value |  | 713 |  |  |  | 713
Issuance of common stock under stock incentive plans, net, shares | 83 |  |  |  |  |
Balance at Dec. 31, 2015 | $ 3 | 483,698 | (300,739) | $ (7,320) | (1,210) | 174,432
Balance, shares at Dec. 31, 2015 | 32,884 |  |  | (1,681) |  |
Net loss |  |  | (8,978) |  |  | (8,978)
Other comprehensive income (loss) |  |  |  |  | 205 | 205
Purchase of treasury stock, value |  |  |  | $ (5,078) |  | (5,078)
Purchase of treasury stock, shares |  |  |  | (1,191) |  |
Issuance of common stock under stock incentive plans, net, value |  | 227 |  |  |  | 227
Issuance of common stock under stock incentive plans, net, shares | 4 |  |  |  |  |
Balance at Dec. 31, 2016 | $ 3 | 483,925 | (309,717) | $ (12,398) | (1,005) | 160,808
Balance, shares at Dec. 31, 2016 | 32,888 |  |  | (2,872) |  |
Net loss |  |  | (673) |  |  | (673)
Other comprehensive income (loss) |  |  |  |  | 1,504 | 1,504
Purchase of treasury stock, value |  |  |  | $ (17) |  | (17)
Purchase of treasury stock, shares |  |  |  | (3) |  |
Issuance of common stock under stock incentive plans, net, value |  | 1,360 |  |  |  | 1,360
Issuance of common stock under stock incentive plans, net, shares | 29 |  |  |  |  |
Balance at Dec. 31, 2017 | $ 3 | $ 485,285 | $ (310,390) | $ (12,415) | $ 499 | $ 162,982
Balance, shares at Dec. 31, 2017 | 32,917 |  |  | (2,875) |  |

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