Assets Manufactured for Internal Use (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended			3 Months Ended	9 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Assets Manufactured for Internal Use Useful life of assets manufactured for internal use Adjustment	Sep. 30, 2013 Assets Manufactured for Internal Use Useful life of assets manufactured for internal use Adjustment
Change in estimate of useful life of assets manufactured for internal use
Useful life												10 years	5 years
Profit before tax									$ (16,104)	$ (32,388)	$ 7,471	$ 100
Net profit	$ 614	$ (4,750)	$ (4,019)	$ (8,988)	$ (14,818)	$ (8,718)	$ (471)	$ (10,027)	$ (17,144)	$ (34,034)	$ 5,077	$ 100