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Acquisition (Narrative) (Details) - Platinum Health Services, LLC - USD ($) shares in Thousands, $ in Thousands |  | 6 Months Ended
--- | --- | ---
Jul. 12, 2013 | Jun. 30, 2015
Business Acquisition [Line Items] |  |
Total purchase consideration | $ 50,766 |
Cash payments to acquire business | $ 5,000 |
Equity interest issued to acquiree (number of shares) | 1,215 |
Equity interest issued to acquiree | $ 30,062 |
Contingent consideration fair value | $ 15,704 |
Contingent Consideration, Total Shares |  |
Business Acquisition [Line Items] |  |
Equity interest issued to acquiree (number of shares) | 1,005 |
Contingent Consideration, Shares Issued |  |
Business Acquisition [Line Items] |  |
Equity interest issued to acquiree (number of shares) |  | 652
Contingent Consideration, Shares Not Issued |  |
Business Acquisition [Line Items] |  |
Equity interest issued to acquiree (number of shares) |  | 353

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- Definition Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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