Other Long-Term Liabilities (Tables)

9 Months Ended

Sep. 30, 2017

Other Long-Term Liabilities [Abstract]

Schedule of other long-term liabilities

	December 31, 2016		September 30, 2017
Deferred revenue, net of current portion	$	17,981	$	18,274
Deferred rent and other facility costs		8,251		7,406
Loss on facilities not in use		7,813		6,227
Deferred payments related to acquisitions		13,754		5,979
Lease incentives		2,684		2,902
Other long-term liabilities	$	50,483	$	40,788