Quarterly report pursuant to Section 13 or 15(d)

Acquisitions ITS - Fair Value of Consideration Transferred (Details)

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Acquisitions ITS - Fair Value of Consideration Transferred (Details) (USD $)
 3 Months Ended 0 Months Ended
Sep. 30, 2014
Apr. 22, 2013
ITS [Member]
Sep. 30, 2014
ITS [Member]
Business Acquisition [Line Items]      
Cash paid to, or on behalf of, ITS and its equity holders   $ 101,000,000  
Cash deposited in escrow   19,000,000  
Fair value of contingent consideration deposited in escrow for assets not acquired (1)   5,000,000 [1]  
Total fair value of the consideration transferred   125,000,000  
Business Acquisition, Escrow Funds Released     10,500,000
Business Acquisition, Escrow Funds Released to Seller 2,000,000    
Business Combination, Amount Remaining in Escrow $ 3,000,000    
[1] Based on the terms of the Acquisition Agreement, $5 million of the $24 million in escrow to be paid to the seller was contingent upon certain future liabilities that could become due by ITS in certain jurisdictions. Any payments in relation to these liabilities would be deducted from the $5 million escrow amount and the net balance of the escrow would be paid to the seller. During the third quarter of 2014, we released $2 million to the seller, leaving $3 million remaining in escrow. We estimate that the entire $3 million remaining in escrow will be paid to the seller, and therefore, the estimated fair value of the consideration in escrow related to these liabilities is $3 million. Any changes to the fair value of the contingent consideration in the future of less than $3 million will result in recording a receivable from escrow which will be recorded at fair value. We do not expect to recover any amount from escrow related to the contingent consideration; therefore, as of September 30, 2014, the fair value of the receivable was zero.