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Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2015
Accounting Policies [Abstract]  
Financial data for the investment in affiliated companies
Financial data for the investment in affiliated companies for the quarter ended March 31, 2014 is summarized in the following table (in thousands):
Income statement data
Quarter Ended
March 31, 2014
Revenue
$
9,088

Gross profit
3,489

Net income
2,413

Equity in earnings of affiliated companies
677


Financial data for consolidated variable interest entities
Financial data for consolidated variable interest entities are summarized in the following table (in thousands):
Balance sheet data
March 31, 
 2015
 
December 31, 
 2014
Current assets
$
47,633

 
$
57,046

Non-current assets
41,284

 
43,165

Current liabilities
14,664

 
22,525

Non-current liabilities
34,672

 
36,155


 
Quarters Ended March 31,
Income statement data
2015
 
2014
Revenue
$
18,240

 
$
20,624

Gross profit
2,206

 
1,802

Net income (loss)
130

 
(571
)