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Acquisitions (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Sep. 30, 2014 item | Jun. 30, 2014 item | Mar. 31, 2014 item
Acquisitions |  |  |
Number of acquisitions | 0 | 2 | 1
Fair value of consideration transferred |  | $ 40.2 |
Amount allocated to goodwill and identifiable intangible assets for acquisitions in northern Texas |  | $ 30.4 |

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- Definition Represents the amount allocated to goodwill and intangible assets on the acquisition date. + References No definition available. + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition The number of businesses acquired by the entity during the period. + References No definition available. + Details
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