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QUARTERLY FINANCIAL DATA | 12 Months Ended
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Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract] |
QUARTERLY FINANCIAL DATA | QUARTERLY FINANCIAL DATA (UNAUDITED) Summarized quarterly results for the two years ended December 31, 2014 and 2013 were as follows:
|  | Three Months Ended
2014 |  | March 31 |  | June 30 |  | September 30 |  | December 31 |  | Full Year
Revenues |  | $ | 160,384 |  |  | $ | 174,695 |  |  | $ | 192,764 |  |  | $ | 202,184 |  |  | $ | 730,027 |
Operating expenses: |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenues (exclusive of depreciation and amortization) |  | 102,454 |  |  | 110,102 |  |  | 122,509 |  |  | 121,465 |  |  | 456,530 |
Selling, general and administrative expenses |  | 32,359 |  |  | 38,671 |  |  | 42,875 |  |  | 49,761 |  |  | 163,666 |
Depreciation and amortization expense |  | 3,689 |  |  | 5,451 |  |  | 5,510 |  |  | 2,833 |  |  | 17,483 |
Goodwill impairment loss |  | — |  |  | — |  |  | — |  |  | 2,241 |  |  | 2,241 |
Other operating (income)/ expenses, net |  | 25 |  |  | 1,995 |  |  | 35 |  |  | 1,869 |  |  | 3,924 |
Income from operations |  | 21,857 |  |  | 18,476 |  |  | 21,835 |  |  | 24,015 |  |  | 86,183 |
Interest and other income, net |  | 976 |  |  | 1,164 |  |  | 1,261 |  |  | 1,368 |  |  | 4,769 |
Change in fair value of contingent consideration |  | — |  |  | — |  |  | — |  |  | (1,924 | ) |  | (1,924 | )
Foreign exchange loss |  | (1,241 | ) |  | (1,239 | ) |  | (718 | ) |  | 1,123 |  |  | (2,075 | )
Income before provision for income taxes |  | 21,592 |  |  | 18,401 |  |  | 22,378 |  |  | 24,582 |  |  | 86,953 |
Provision for income taxes |  | 4,228 |  |  | 3,587 |  |  | 3,338 |  |  | 6,159 |  |  | 17,312 |
Net income |  | $ | 17,364 |  |  | $ | 14,814 |  |  | $ | 19,040 |  |  | $ | 18,423 |  |  | $ | 69,641 |
Comprehensive income |  | $ | 13,787 |  |  | $ | 17,708 |  |  | $ | 10,780 |  |  | $ | 7,115 |  |  | $ | 49,390 |
Basic net income per share(1) |  | $ | 0.37 |  |  | $ | 0.31 |  |  | $ | 0.40 |  |  | $ | 0.39 |  |  | $ | 1.48 |
Diluted net income per share(1) |  | $ | 0.35 |  |  | $ | 0.30 |  |  | $ | 0.38 |  |  | $ | 0.37 |  |  | $ | 1.40 |
(1) | Earnings per share amounts for each quarter may not necessarily total to the yearly earnings per share due to the weighting of shares outstanding on a quarterly and year to date basis.
|  | Three Months Ended
2013 |  | March 31 |  | June 30 |  | September 30 |  | December 31 |  | Full Year
Revenues |  | $ | 124,198 |  |  | $ | 133,184 |  |  | $ | 140,150 |  |  | $ | 157,585 |  |  | $ | 555,117 |
Operating expenses: |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenues (exclusive of depreciation and amortization) |  | 77,937 |  |  | 83,547 |  |  | 88,539 |  |  | 97,627 |  |  | 347,650 |
Selling, general and administrative expenses |  | 27,083 |  |  | 28,541 |  |  | 27,893 |  |  | 32,980 |  |  | 116,497 |
Depreciation and amortization expense |  | 3,617 |  |  | 3,854 |  |  | 3,906 |  |  | 3,743 |  |  | 15,120 |
Goodwill impairment loss |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Other operating (income)/ expenses, net |  | 25 |  |  | (293 | ) |  | (418 | ) |  | 43 |  |  | (643 | )
Income from operations |  | 15,536 |  |  | 17,535 |  |  | 20,230 |  |  | 23,192 |  |  | 76,493 |
Interest and other income, net |  | 630 |  |  | 769 |  |  | 846 |  |  | 832 |  |  | 3,077 |
Change in fair value of contingent consideration |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Foreign exchange loss |  | (499 | ) |  | (869 | ) |  | (720 | ) |  | (712 | ) |  | (2,800 | )
Income before provision for income taxes |  | 15,667 |  |  | 17,435 |  |  | 20,356 |  |  | 23,312 |  |  | 76,770 |
Provision for income taxes |  | 2,987 |  |  | 3,317 |  |  | 3,919 |  |  | 4,553 |  |  | 14,776 |
Net income |  | $ | 12,680 |  |  | $ | 14,118 |  |  | $ | 16,437 |  |  | $ | 18,759 |  |  | $ | 61,994 |
Comprehensive income |  | $ | 10,337 |  |  | $ | 13,073 |  |  | $ | 19,412 |  |  | $ | 18,361 |  |  | $ | 61,183 |
Basic net income per share(1) |  | $ | 0.28 |  |  | $ | 0.31 |  |  | $ | 0.36 |  |  | $ | 0.40 |  |  | $ | 1.35 |
Diluted net income per share(1) |  | $ | 0.27 |  |  | $ | 0.29 |  |  | $ | 0.34 |  |  | $ | 0.38 |  |  | $ | 1.28 |
(1) | Earnings per share amounts for each quarter may not necessarily total to the yearly earnings per share due to the weighting of shares outstanding on a quarterly and year to date basis.

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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=35737889&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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