Other Long-Term Liabilities (Tables)

6 Months Ended

Jun. 30, 2013

Other Long-Term Liabilities [Abstract]

Schedule of other long-term liabilities

	2012		2013
Deferred rent and other facility costs	$	11,650	$	11,985
Deferred payments related to acquisition		4,919		4,916
Lease incentives		3,150		2,903
Deferred taxes		—		1,954
Fair value of interest rate swap (see Note 3)		1,211		—
Deferred gain on sale of campus building		975		835
	$	21,905	$	22,593