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Restructuring and Related Charges (Details Textual) (USD $)
 12 Months Ended
Dec. 31, 2013
Campus
Dec. 31, 2012
Restructuring and Related Charges [Abstract]    
Restructuring liabilities $ 10,400,000  
Restructuring charges gross obligations liability 44,766,000 [1]   
Lease term expire 2022  
Campus location closed 20  
Contractual obligation 36,000,000  
Severance and other employee separation costs 6,900,000  
Restructuring and related cost, accelerated depreciation 10,900,000  
Non-cash charges incurred with restructing 48,500,000  
Deferred rent and leasehold incentives 5,700,000  
Severance and other employee separation costs paid $ 6,100,000  
[1] The current portion of restructuring liabilities was $10.4 million as of December 31, 2013, most of which are included in Accounts payable and accrued expenses, and the long-term portion is included in Other long-term liabilities in the Consolidated Balance Sheets. The gross obligation associated with restructuring liabilities as of December 31, 2013 is approximately $44.8 million, which principally represents non-cancelable leases that will be paid over the respective lease terms through 2022.