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CONSOLIDATED STATEMENT OF STOCKHOLDER'S EQUITY (DEFICIT) (USD $) In Thousands, except Share data, unless otherwise specified | Total | Common Stock | Additional paid-in capital | Accumulated other comprehensive income (loss) | Accumulated deficit | Treasury stock
--- | --- | --- | --- | --- | --- | ---
Balance at beginning of period at Dec. 31, 2010 | $ (4,849) | $ 21 | $ 729,271 | $ 31 | $ (691,947) | $ (42,225)
Balance at beginning of period (in shares) at Dec. 31, 2010 |  | 20,620,917 |  |  |  | 1,111,999
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Issuance of common stock under employee stock compensation plans, net | 54 |  | 54 |  |  |
Issuance of common stock under employee stock compensation plans (in shares) |  | 61,589 |  |  |  |
Unrealized net loss on available-for-sale securities | (31) |  |  | (31) |  |
Repurchase of common stock | (55) |  |  |  |  | (55)
Repurchase of common stock (in shares) |  |  |  |  |  | (6,223)
Stock-based compensation | 3,351 |  | 3,351 |  |  |
Shares released from restriction | 0 |  |  |  |  |
Net income (loss) | 9,715 |  | 0 |  | 9,715 |
Balance at end of period at Dec. 31, 2011 | 8,185 | 21 | 732,676 |  | (682,232) | (42,280)
Balance at end of period (in shares) at Dec. 31, 2011 |  | 20,682,506 |  |  |  | 1,118,222
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Issuance of common stock under employee stock compensation plans, net | 1,103 |  | 1,103 |  |  |
Issuance of common stock under employee stock compensation plans (in shares) |  | 180,979 |  |  |  |
Issuance of common stock, net | 5,313 |  | 5,313 |  |  |
Issuance of common stock, net (in shares) |  | 302,750 |  |  |  |
Stock-based compensation | 4,067 |  | 4,067 |  |  |
Shares released from restriction | 8,344 |  | 8,344 |  |  |
Shares released from restriction (in shares) |  | 112,371 |  |  |  |
Net income (loss) | (527) |  |  |  | (527) |
Balance at end of period at Dec. 31, 2012 | 26,485 | 21 | 751,503 |  | (682,759) | (42,280)
Balance at end of period (in shares) at Dec. 31, 2012 |  | 21,278,606 |  |  |  | 1,118,222
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Issuance of common stock under employee stock compensation plans, net | 3,128 | 1 | 3,127 |  |  |
Issuance of common stock under employee stock compensation plans (in shares) |  | 308,137 |  |  |  |
Unrealized net loss on available-for-sale securities | 2,914 |  |  | 2,914 |  |
Stock-based compensation | 5,666 |  | 5,666 |  |  |
Retirement of treasury shares (in shares) | (1,118,222) | (1,118,222) |  |  |  | (1,118,222)
Retirement of treasury shares | 0 | (1) | (42,279) | 0 | 0 | 42,280
Shares released from restriction | 0 |  |  |  |  |
Net income (loss) | 11,420 |  |  |  | 11,420 |
Balance at end of period at Dec. 31, 2013 | $ 49,613 | $ 21 | $ 718,017 | $ 2,914 | $ (671,339) |
Balance at end of period (in shares) at Dec. 31, 2013 |  | 20,468,521 |  |  |  |

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