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Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified | Jun. 30, 2013 | Dec. 31, 2012
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Statement Of Financial Position [Abstract] |  |
Long-term investments and other assets, fair value | $ 3,366 | $ 2,970
Common stock, par value | $ 0.01 | $ 0.01
Common stock, shares authorized | 1,000,000,000 | 1,000,000,000
Common stock, shares issued | 8,145,833 | 8,071,674
Common stock, shares outstanding | 7,820,833 | 7,826,674
Treasury stock, shares | 325,000 | 245,000

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