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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Contractual Cash Obligation Payments
The following is a summary of the Company's specified contractual cash obligations as of December 31, 2017, excluding current liabilities that are included in the consolidated balance sheet (in thousands):

 
 
Operating Leases
 
Related Party Leases
 
Purchase Obligations
 
Total
2018
 
$
20,387

 
$
1,302

 
$
10,283

 
$
31,972

2019
 
17,520

 
1,282

 
8,362

 
27,164

2020
 
14,698

 
1,314

 
1,055

 
17,067

2021
 
12,146

 
1,347

 

 
13,493

2022
 
8,089

 
1,380

 

 
9,469

Thereafter
 
7,267

 
2,618

 

 
9,885

Total
 
$
80,107

 
$
9,243

 
$
19,700

 
$
109,050