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Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Cash paid for: |  |  |  |
Interest | $ 509 | $ 617 | $ 520 | $ 664
Income taxes for continuing operations | 2,525 | 222 | 3,123 | 1,529
Income taxes for discontinued operations |  |  |  | 5
Total | 3,034 | 839 | 3,643 | 2,198
Income Taxes |  |  |  |
Tax expense | $ 5,735 | $ 3,049 | $ 7,778 | $ 2,105
Effective tax rate (as a percent) |  |  | 41.30% | 58.10%

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