Quarterly report pursuant to Section 13 or 15(d)

Other (Details)

v2.4.0.8
Other (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2014
Jun. 30, 2014
Dec. 31, 2013
Aug. 14, 2014
Subsequent Event [Member]
Vertical Drilling [Member]
Operating Leases And Other Property Plant And Equipment [Line Items]        
Lease payments in 2014   $ 18,111    
Lease payments in 2014 in remainder of fiscal year   9,200   1,656
Lease payments in 2015   18,250   4,914
Lease payments in 2016   4,795    
Impairment charge of equipment to be abondoned     1,707  
Gain on sale of equipment $ 1,080 $ 1,080