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Unconsolidated Equity Method Investment (Tables)
 12 Months Ended
Dec. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]  
Equity Method Investments
 
 
Amount
Investment in joint venture at December 31, 2013
 
$
21,123

Investment in joint venture
 
26,050

Earnings from joint venture, net of tax
 
3,054

Distributions
 
(3,774
)
Investment in joint venture at December 31, 2014
 
46,453

Investment in joint venture
 
3,394

Earnings from joint venture, net of tax
 
6,257

Distributions
 
(5,727
)
Investment in joint venture at December 31, 2015
 
$
50,377