Quarterly report pursuant to Section 13 or 15(d)

Notes Payable (Details)

v3.2.0.727
Notes Payable (Details)
$ / shares in Units, $ in Thousands
 6 Months Ended 12 Months Ended
Sep. 19, 2014
USD ($)
Mar. 14, 2014
USD ($)
Dec. 19, 2013
USD ($)
Oct. 15, 2013
USD ($)
Jun. 24, 2013
USD ($)
Jun. 30, 2015
USD ($)
$ / shares
Jun. 30, 2014
USD ($)
Dec. 31, 2013
USD ($)
Oct. 23, 2013
item
Notes Payable                  
Class Of Warrant Or Right, Exercise Price Of Warrants Or Rights | $ / shares           $ 1.19      
Proceeds from debt financing             $ 1,500    
RMBAH First Loan Facility [Member]                  
Notes Payable                  
Annual interest rate (as a percent)           8.75%      
Maturity Date           Mar. 31, 2016      
Proceeds From Lines Of Credit $ 3,500                
Repayments of Debt               $ 20,000  
Proceeds from debt financing   $ 1,500 $ 5,000   $ 20,000        
Periodic payment amount           $ 5,937      
Line of Credit Facility, Remaining Borrowing Capacity   3,500              
Maximum Borrowing Capacity   $ 10,000              
Sweetwater IDR Bond [Member]                  
Notes Payable                  
Proceeds from Issuance of Long-term Debt       $ 34,000          
Maturity Date           Oct. 01, 2021      
Periodic payment amount           $ 30,973      
Due Quarterly Commencing From January One Two Thousand Fourteen [Member] | Sweetwater IDR Bond [Member]                  
Notes Payable                  
Annual interest rate (as a percent)                 5.75%
Due Quarterly Commencing From January One Two Thousand Fifteen [Member] | Sweetwater IDR Bond [Member]                  
Notes Payable                  
Number of installments | item                 28
Due Quarterly Commencing From June Thirty Two Thousand Fourteen [Member] | RMBAH First Loan Facility [Member]                  
Notes Payable                  
Periodic payment amount           $ 810