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Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Dec. 31, 2012
Goodwill Gross |  |  |  |
Balance, beginning of period |  |  | $ 68,585 |
Foreign currency fluctuations |  |  | (3,292) |
Balance, end of period | 65,293 |  | 65,293 | 68,585
Goodwill Accumulated Impairment Losses |  |  |  |
Balance, beginning of period |  |  | (48,868) |
Foreign currency fluctuations |  |  | 2,838 |
Balance, end of period | (46,030) |  | (46,030) | (48,868)
Goodwill Total |  |  |  |
Balance, beginning of period |  |  | 19,717 |
Foreign currency fluctuations |  |  | (454) |
Balance, end of period | 19,263 |  | 19,263 | 19,717
Acquired Finite-Lived Intangible Assets |  |  |  |
Original cost | 34,211 |  | 34,211 | 35,671
Accumulated amortization | (14,966) |  | (14,966) | (14,278)
Carrying amount | 19,245 |  | 19,245 | 21,393
Amortization expense on Intangible Assets | 637 | 656 | 1,281 | 1,432
Estimated aggregate amortization expense of Intangible Assets |  |  |  |
Remaining 2013 | 968 |  | 968 |
2014 | 1,932 |  | 1,932 |
2015 | 1,903 |  | 1,903 |
2016 | 1,903 |  | 1,903 |
2017 | 1,845 |  | 1,845 |
Thereafter | 10,694 |  | 10,694 |
Total | 19,245 |  | 19,245 |
Customer Lists and Service Contracts |  |  |  |
Acquired Finite-Lived Intangible Assets |  |  |  |
Original cost | 22,467 |  | 22,467 | 23,817
Accumulated amortization | (10,278) |  | (10,278) | (9,907)
Carrying amount | 12,189 |  | 12,189 | 13,910
Weighted-average original life (in years) |  |  | 15 years | 15 years
Trade Name |  |  |  |
Acquired Finite-Lived Intangible Assets |  |  |  |
Original cost | 4,597 |  | 4,597 | 4,657
Accumulated amortization | (1,712) |  | (1,712) | (1,565)
Carrying amount | 2,885 |  | 2,885 | 3,092
Weighted-average original life (in years) |  |  | 14 years | 14 years
Technology |  |  |  |
Acquired Finite-Lived Intangible Assets |  |  |  |
Original cost | 7,147 |  | 7,147 | 7,197
Accumulated amortization | (2,976) |  | (2,976) | (2,806)
Carrying amount | $ 4,171 |  | $ 4,171 | $ 4,391
Weighted-average original life (in years) |  |  | 13 years | 13 years

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