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Fair Value Measurements (Details 2) (USD $)
|
12 Months Ended |
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
| Changes in the fair values of the entity's Level 3 assets and liabilities |
|
|
|
| Marketable equity securities, cost basis |
$ 1,200,000 |
|
|
| Impairment charge |
900,000 |
|
|
| Reconciliation of changes in the fair values of level 3 liabilities |
|
|
|
| Fair value of debt based on average trading price |
452,200,000 |
|
|
|
Earnouts
|
|
|
|
| Reconciliation of changes in the fair values of level 3 liabilities |
|
|
|
| Balance at the beginning of period |
1,673,000 |
1,602,000 |
|
| Additions |
1,855,000 |
939,000 |
2,602,000 |
| Payments |
|
|
(1,000,000) |
| Change in fair value recognized in earnings |
(671,000) |
(868,000) |
|
| Balance at the end of period |
2,857,000 |
1,673,000 |
1,602,000 |
|
Springbox Revenue Sharing
|
|
|
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| Changes in the fair values of the entity's Level 3 assets and liabilities |
|
|
|
| Period after the date of sale entity entitled to receive a percentage of revenue collected |
3 years |
|
|
| Changes in fair value of Level 3 assets |
|
|
|
| Additions |
768,000 |
|
|
| Balance at the end of the period |
768,000 |
|
|
|
EyeWonder Contingent Consideration
|
|
|
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| Changes in the fair values of the entity's Level 3 assets and liabilities |
|
|
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| Amount held back from purchase price for certain transaction costs |
|
$ 5,000,000 |
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| Period for which amount is held back to fund transaction costs |
|
1 year |
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