| Consolidated Statements of Operations and Comprehensive Loss (Parenthetical) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | |
|---|---|---|
| Jun. 30, 2014 | Jun. 30, 2013 | |
| Gain on disposal | $ 0 | $ 3,275 | 
| X | ||||||||||
| 
- Definition Gain (loss) from sale or disposal of an organization or integrated set of activities (for example, but not limited to, a partnership or corporation) engaged in providing a product or service in a commercial, industrial, or professional environment. No definition available. 
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