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Other Long-Term Liabilities (Tables)
 6 Months Ended
Jun. 30, 2018
Other Long-Term Liabilities [Abstract]  
Schedule of other long-term liabilities

 

 

 

 

 

 

 

 

 

    

December 31, 2017

    

June 30, 2018

 

Contract liabilities, net of current portion

 

$

21,033

 

$

23,275

 

Deferred rent and other facility costs

 

 

7,113

 

 

6,722

 

Deferred payments related to acquisitions

 

 

6,385

 

 

6,397

 

Loss on facilities not in use

 

 

5,652

 

 

4,709

 

Lease incentives

 

 

2,832

 

 

2,618

 

Other long-term liabilities

 

$

43,015

 

$

43,721