Acquisitions (Narrative) (Details) (USD $)	3 Months Ended		3 Months Ended		3 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Mar. 31, 2013 Cementing Service Acquisitioin[Member]	Sep. 30, 2014 Cementing Service Acquisitioin[Member]	Sep. 30, 2014 Yennai Acquisition [Member]
Business Acquisition [Line Items]
Business acquisition, purchase price payable over next two years				$ 1,300,000
Cash paid to acquire equity interest	25,000,000		20,400,000		25,000,000
Approximately cash paid	25,000,000		20,400,000		25,000,000
Company will repay of complete debt			3,000,000
Goodwill	2,456,522,000	2,458,109,000	15,100,000
Additional consideration attributable to acquisition				$ 2,400,000