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Commitments (Details 4) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Operating Leases: |  |  |
Consolidated rent expense | $ 2,982 | $ 3,098 | $ 2,900
Future minimum payments under long-term non-cancelable operating leases |  |  |
2014 | 2,267 |  |
2015 | 1,226 |  |
2016 | 1,124 |  |
2017 | 929 |  |
2018 | 654 |  |
Thereafter | 1,621 |  |
Total | $ 7,821 |  |

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