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Business Combinations (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Summary of purchase price allocation  
Cash $ 1,112
Contract receivables 11,985
Other current and non-current assets 201
Customer-related intangible 14,726
Marketing-related intangibles 484
Goodwill 74,391
Property and equipment 1,121
Total Assets 104,020
Accounts payable and other 954
Accrued salaries and benefits 298
Billings in excess of costs 851
Total Liabilities 2,103
Net Assets $ 101,917