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Other Long-Term Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Other Long-Term Liabilities [Abstract]    
Loss on facilities not in use $ 15,229 $ 21,280
Deferred revenue, net of current portion 14,429 9,654
Deferred rent and other facility costs 8,993 8,646
Deferred payments related to acquisition 6,078 5,198
Lease incentives 3,125 1,056
Deferred gain on sale of campus building 133 414
Total other long-term liabilities $ 47,987 $ 46,248