Unconsolidated Investments (Tables)
 9 Months Ended
Sep. 30, 2017
Schedule of Equity Method Investments [Line Items]  
Schedule of Projects Accounted under Equity Method of Accounting
The Company's unconsolidated investments consist of the following for the periods presented below (in thousands):
 
 
 
 
 
Percentage of Ownership
 
September 30,
 
December 31,
 
September 30,
 
December 31,
 
2017
 
2016
 
2017
 
2016
South Kent
$
3,732

 
$
1,537

 
50.0
%
 
50.0
%
Grand
5,758

 
3,459

 
45.0
%
 
45.0
%
K2
102,019

 
97,051

 
33.3
%
 
33.3
%
Armow
133,063

 
131,247

 
50.0
%
 
50.0
%
PEGH 2
59,261


—

 
20.2
%

NA

Unconsolidated investments
$
303,833

 
$
233,294

 
 
 
 
Schedule of Aggregate Operating Results of Unconsolidated Investments [Table Text Block]
 
Three months ended September 30,
 
Nine months ended September 30,
 
2017
 
2016(1)
 
2017
 
2016(1)
Revenue
$
45,008

 
$
40,863

 
$
228,111

 
$
167,426

Cost of revenue
31,550

 
23,768

 
89,288

 
69,367

Operating expenses
11,030

 
459

 
12,663

 
1,928

Other expense
12,062

 
21,553

 
50,038

 
89,820

Net income (loss)
$
(9,634
)
 
$
(4,917
)
 
$
76,122

 
$
6,311


(1) 
Results for the three and nine months ended September 30, 2016 do not include Armow, which was acquired in October 2016 and PEGH 2, which was acquired in July 2017.