Long-term Debt (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Long-Term Debt Details 1
Convertible notes	$ 16,545	$ 16,545
Non-recourse debt	123,711	132,387
Total debt	140,256	148,932
Less current portion	23,736	25,297
Total long-term debt	$ 116,520	$ 123,635