Annual report pursuant to Section 13 and 15(d)

Subsequent Events (Details Textual)

v2.4.0.6
Subsequent Events (Details Textual) (USD $)
1 Months Ended 12 Months Ended
Feb. 28, 2013
Dec. 18, 2012
Dec. 24, 2012
Nov. 30, 2012
Nov. 30, 2011
Nov. 30, 2010
Feb. 09, 2013
Dec. 20, 2012
Dec. 20, 2012
Secured Term Credit Facility [Member]
Nov. 30, 2012
Maximum [Member]
Nov. 30, 2012
Minimum [Member]
Dec. 14, 2012
Prudential [Member]
Dec. 14, 2012
Pinedale GP [Member]
Dec. 20, 2012
Ultra Petroleum Corporation [Member]
Subsequent Events (Textual) [Abstract]                            
Acquisition consideration, cash                           $ 205,000,000
Acquisition consideration, certain investment securities                           23,000,000
Annual rent for initial term under Lease Agreement                   27,500,000 20,000,000      
Acquisition by contributing in cash and certain equity securities                       30,000,000 108,310,000  
Percentage of Economic Interest Held by Partners                       18.95% 81.05%  
Loan facility secured by assets         10,000,000       70,000,000          
Variable annual rate equal to LIBOR plus                 3.25%          
Public offering   13,000,000 1,950,000                      
Subsequent Events (Additional Textual) [Abstract]                            
Gross proceeds   78,000,000                        
Common stock price per share     $ 6.00       $ 6.00              
Net proceeds after underwriters' discount   73,600,000 11,040,000                      
Amount of net proceeds used from offering to finance acquisition               $ 73,600,000            
Margin loan agreement termination date         Dec. 20, 2012                  
Dividends declared per share $ 0.125     $ 0.44 $ 0.41 $ 0.43                
Dividend declared date Feb. 05, 2013                          
Dividend paid date Mar. 19, 2013                          
Dividend record date Mar. 08, 2013