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Business Combinations (Tables) | 12 Months Ended
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Dec. 31, 2012
Business Combinations [Abstract] |
Purchase price allocation | The purchase price allocation as of February 10, 2011 and as of January 1, 2012 and adjustments made to the estimated acquisition date fair values during the measurement period are as follows (in thousands):
| Acquisition Date Estimated Fair Value as of February 10, 2011 |  | Measurement Period Adjustments |  | Final Acquisition Date Fair Value as of January 1, 2012
Accounts receivable | $ | 18,321 |  |  | $ | 1,298 |  |  | $ | 19,619 |
Prepaid expenses and other current assets | 3,896 |  |  | — |  |  | 3,896 |
Deferred income tax assets | 15,857 |  |  | (7,923 | ) |  | 7,934 |
Property and equipment | 22,359 |  |  | 901 |  |  | 23,260 |
Intangible assets | 126,900 |  |  | 4,900 |  |  | 131,800 |
Other non-current assets | 8,884 |  |  | — |  |  | 8,884 |
Total assets acquired | $ | 196,217 |  |  | $ | (824 | ) |  | $ | 195,393 |
Accounts payable | (3,977 | ) |  | — |  |  | (3,977 | )
Accrued expenses | (8,461 | ) |  | — |  |  | (8,461 | )
Deferred income tax liabilities | (43,824 | ) |  | 7,037 |  |  | (36,787 | )
Other non-current liabilities | (11,431 | ) |  | 5,411 |  |  | (6,020 | )
Long-term debt | (2,014 | ) |  | — |  |  | (2,014 | )
Total liabilities assumed | (69,707 | ) |  | 12,448 |  |  | (57,259 | )
Total identifiable net assets | 126,510 |  |  | 11,624 |  |  | 138,134 |
Goodwill | 283,097 |  |  | (11,624 | ) |  | 271,473 |
Total cash consideration | $ | 409,607 |  |  | $ | — |  |  | $ | 409,607 |

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- Definition Tabular disclosure of all of the fair values of the purchase price and assets and liabilities acquired in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
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