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Selected Quarterly Financial Information | 12 Months Ended
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Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract] |
Selected Quarterly Financial Information |
17. | Selected Quarterly Financial Information (Unaudited):
The following tables set forth a summary of the Company’s selected quarterly financial information for each of the four quarters ended December 31, 2013 and 2012 (in thousands, except for per share data):
|  | 2013 Quarters |
|  | First |  |  | Second |  |  | Third |  |  | Fourth |
Net patient service revenue |  | $ | 502,715 |  |  | $ | 529,180 |  |  | $ | 554,730 |  |  | $ | 567,387 |
Operating expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Practice salaries and benefits |  |  | 329,201 |  |  |  | 331,922 |  |  |  | 346,879 |  |  |  | 353,316 |
Practice supplies and other operating expenses |  |  | 19,500 |  |  |  | 19,416 |  |  |  | 19,445 |  |  |  | 24,027 |
General and administrative expenses |  |  | 53,318 |  |  |  | 54,601 |  |  |  | 54,654 |  |  |  | 55,636 |
Depreciation and amortization |  |  | 9,144 |  |  |  | 9,870 |  |  |  | 10,461 |  |  |  | 10,491 |
Total operating expenses |  |  | 411,163 |  |  |  | 415,809 |  |  |  | 431,439 |  |  |  | 443,470 |
Income from operations |  |  | 91,552 |  |  |  | 113,371 |  |  |  | 123,291 |  |  |  | 123,917 |
Investment income |  |  | 402 |  |  |  | 396 |  |  |  | 372 |  |  |  | 526 |
Interest expense |  |  | (1,189 | ) |  |  | (1,673 | ) |  |  | (1,507 | ) |  |  | (1,046 | )
Income before income taxes |  |  | 90,765 |  |  |  | 112,094 |  |  |  | 122,156 |  |  |  | 123,397 |
Income tax provision |  |  | 35,398 |  |  |  | 42,876 |  |  |  | 45,198 |  |  |  | 44,423 |
Net income |  | $ | 55,367 |  |  | $ | 69,218 |  |  | $ | 76,958 |  |  | $ | 78,974 |
Per common and common equivalent share data (1): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.56 |  |  | $ | 0.70 |  |  | $ | 0.77 |  |  | $ | 0.79 |
Diluted |  | $ | 0.55 |  |  | $ | 0.68 |  |  | $ | 0.76 |  |  | $ | 0.78 |
Weighted average shares: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  | 98,618 |  |  |  | 99,116 |  |  |  | 99,506 |  |  |  | 99,469 |
Diluted |  |  | 100,784 |  |  |  | 101,098 |  |  |  | 101,178 |  |  |  | 101,080 |
(1) | Basic and diluted per share amounts are computed for each of the periods presented. Accordingly, the sum of the quarterly per share amounts may not agree with the full year amount.
|  | 2012 Quarters |
|  | First |  |  | Second |  |  | Third |  |  | Fourth |
Net patient service revenue |  | $ | 422,616 |  |  | $ | 449,530 |  |  | $ | 473,134 |  |  | $ | 471,332 |
Operating expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Practice salaries and benefits |  |  | 272,261 |  |  |  | 275,951 |  |  |  | 292,030 |  |  |  | 290,671 |
Practice supplies and other operating expenses |  |  | 16,985 |  |  |  | 17,956 |  |  |  | 17,606 |  |  |  | 19,276 |
General and administrative expenses |  |  | 46,869 |  |  |  | 48,200 |  |  |  | 48,200 |  |  |  | 50,271 |
Depreciation and amortization |  |  | 7,113 |  |  |  | 7,687 |  |  |  | 7,925 |  |  |  | 8,091 |
Total operating expenses |  |  | 343,228 |  |  |  | 349,794 |  |  |  | 365,761 |  |  |  | 368,309 |
Income from operations |  |  | 79,388 |  |  |  | 99,736 |  |  |  | 107,373 |  |  |  | 103,023 |
Investment income |  |  | 428 |  |  |  | 365 |  |  |  | 422 |  |  |  | 681 |
Interest expense |  |  | (554 | ) |  |  | (848 | ) |  |  | (624 | ) |  |  | (1,219 | )
Income before income taxes |  |  | 79,262 |  |  |  | 99,253 |  |  |  | 107,171 |  |  |  | 102,485 |
Income tax provision |  |  | 30,912 |  |  |  | 38,709 |  |  |  | 41,261 |  |  |  | 36,382 |
Net income |  | $ | 48,350 |  |  | $ | 60,544 |  |  | $ | 65,910 |  |  | $ | 66,103 |
Per common and common equivalent share data (1): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.50 |  |  | $ | 0.62 |  |  | $ | 0.67 |  |  | $ | 0.67 |
Diluted |  | $ | 0.49 |  |  | $ | 0.61 |  |  | $ | 0.66 |  |  | $ | 0.66 |
Weighted average shares: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  | 96,538 |  |  |  | 97,086 |  |  |  | 97,876 |  |  |  | 98,226 |
Diluted |  |  | 98,798 |  |  |  | 99,090 |  |  |  | 99,618 |  |  |  | 100,212 |
(1) | Basic and diluted per share amounts are computed for each of the periods presented. Accordingly, the sum of the quarterly per share amounts may not agree with the full year amount.

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- Definition The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e765-108305 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e725-108305 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=25249566&loc=d3e1280-108306 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section G -Subsection 1 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 302 -Paragraph a + Details
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