Acquisitions (Details)	3 Months Ended		6 Months Ended			3 Months Ended	6 Months Ended	3 Months Ended			3 Months Ended			6 Months Ended				12 Months Ended		6 Months Ended				6 Months Ended					6 Months Ended			6 Months Ended			6 Months Ended
	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)	Dec. 31, 2013 USD ($)	Mar. 31, 2014 MSB/DQ Member [Domain] USD ($)	Jun. 30, 2014 MSB/DQ Member [Domain] USD ($)	Sep. 30, 2013 PIQ Acquisition [Domain] USD ($)	Sep. 30, 2013 PIQ Acquisition [Domain] NZD	Sep. 01, 2013 PIQ Acquisition [Domain]	Mar. 31, 2014 Terralink [Domain] USD ($)	Mar. 31, 2014 Terralink [Domain] NZD	Jun. 30, 2014 Terralink [Domain] USD ($)	Jun. 30, 2014 Terralink [Domain] Property, Plant and Equipment [Member] USD ($)	Jun. 30, 2014 Terralink [Domain] Capital Data And Database Developement Costs [Domain] USD ($)	Jun. 30, 2014 Terralink [Domain] Trade Names [Member] USD ($)	Jun. 30, 2014 Terralink [Domain] Customer Lists [Member]	Dec. 31, 2013 EQECAT Acquisition [Member] USD ($)	Jun. 30, 2014 EQECAT Acquisition [Member] USD ($)	Jun. 30, 2014 EQECAT Acquisition [Member] Trade Names [Member]	Jun. 30, 2014 EQECAT Acquisition [Member] Customer Lists [Member]	Jun. 30, 2014 Data and analytics [Member] USD ($)	Dec. 31, 2013 Data and analytics [Member] USD ($)	Jun. 30, 2014 Data and analytics [Member] MSB/DQ Member [Domain] USD ($)	Jun. 30, 2014 Data and analytics [Member] Terralink [Domain] USD ($)	Jun. 30, 2014 Parent [Member] USD ($)	Jun. 30, 2013 Parent [Member] USD ($)	Dec. 31, 2013 Parent [Member] USD ($)	Jun. 30, 2014 Guarantor Subsidiaries [Member] USD ($)	Jun. 30, 2013 Guarantor Subsidiaries [Member] USD ($)	Dec. 31, 2013 Guarantor Subsidiaries [Member] USD ($)	Jun. 30, 2014 Non-Guarantor Subsidiaries [Member] USD ($)	Jun. 30, 2013 Non-Guarantor Subsidiaries [Member] USD ($)	Dec. 31, 2013 Non-Guarantor Subsidiaries [Member] USD ($)	Jun. 30, 2014 Consolidation, Eliminations [Member] USD ($)	Jun. 30, 2013 Consolidation, Eliminations [Member] USD ($)	Dec. 31, 2013 Consolidation, Eliminations [Member] USD ($)
Business Acquisition [Line Items]
Effect of exchange rate on cash			$ 903,000	$ (2,574,000)																						$ 0	$ 0		$ 0			$ 903,000	$ (2,574,000)		$ 0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents																								36,000
Business Combination, Acquired Receivables, Gross Contractual Amount																								9,227,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets																								2,047,000
Business Combination, Recognized Intangible Assets Acquired, Deferred Tax Asset Current																								1,848,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment																								177,311,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent																								23,821,000
Business Acquisition, Pro Forma Revenue	367,151,000	374,417,000	699,952,000	731,341,000
Business Acquisition, Percentage of Voting Interests Acquired										10.00%
Noncontrolling Interest, Ownership Percentage by Parent	60.00%		60.00%
Business Acquisition, Cost of Acquired Entity, Cash Paid						650,100,000		2,600,000	3,300,000		11,900,000	14,500,000						22,200,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life														5 years	15 years	12 years	15 years			10 years	14 years
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets													1,400,000	2,100,000	6,000,000	200,000			600,000					129,400,000
Business Combination, Recognized Intangible Assets Acquired, equity method investment																								18,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable																								4,151,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Income Tax Payable																								31,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue																								22,403,000
business acquisition, recognized identifiable assets acquired, deferred revenue non current																								1,663,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net																								650,100,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount																								702,169,000
Purchase price allocation, goodwill	1,774,013,000		1,774,013,000		1,390,674,000																	1,042,089,000	688,842,000			0		0	1,582,525,000		1,228,855,000	191,488,000		161,819,000	0		0
Goodwill, Acquired During Period			370,386,000				364,000,000											15,300,000				340,294,000		333,900,000	2,300,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount																								133,600,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual			23,600,000
Finite-Lived Customer Lists, Gross																			3,900,000
Business Acquisition, Pro Forma Net Income (Loss)	13,626,000	42,577,000	22,147,000	66,393,000
Business Combination, Acquisition Related Costs	$ 1,100,000		$ 9,700,000