Accounting Policies - Financial Data for Variable Interest Entities - Income Statement (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014
Accounting Policies [Abstract]
Revenue	$ 18,295	$ 35,482
Gross profit	1,475	4,475
Net loss	$ (767)	$ (341)

Variable Interest Entities, Summarized Financial Information, Gross Profit (Loss)

No definition available.

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