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Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Data |
|  | Quarter ended |
|  | March 31 |  | June 30 |  |  |  | Sept. 30 |  |  |  | Dec. 31 |
|  | (in thousands, except per share amounts) |
2014 |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 636,999 |  |  | $ | 564,621 |  |  |  |  | $ | 560,303 |  |  |  |  | $ | 595,865 |  |
Gross profit |  | 106,176 |  |  | 95,453 |  |  |  |  | 100,817 |  |  |  |  | 101,359 |  |
Operating income |  | 16,591 |  |  | 3,414 |  | (1) |  | 14,460 |  |  |  |  | 13,009 |  | (2)
Net income |  | 9,564 |  |  | 1,891 |  |  |  |  | 8,385 |  |  |  |  | 8,164 |  |
Basic net income per share |  | 0.37 |  |  | 0.07 |  |  |  |  | 0.33 |  |  |  |  | 0.27 |  | (3)
Diluted net income per share |  | 0.37 |  |  | 0.07 |  |  |  |  | 0.33 |  |  |  |  | 0.27 |  | (3)
2013 |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 611,836 |  |  | $ | 547,274 |  |  |  |  | $ | 539,869 |  |  |  |  | $ | 557,133 |  |
Gross profit |  | 108,118 |  |  | 97,746 |  |  |  |  | 97,409 |  |  |  |  | 89,978 |  |
Operating income |  | 22,009 |  |  | 10,228 |  |  |  |  | 17,112 |  |  |  |  | 6,874 |  | (4)
Net income |  | 13,173 |  |  | 3,488 |  | (5) |  | 10,082 |  |  |  |  | 5,289 |  | (6)
Basic net income per share |  | 0.51 |  |  | 0.14 |  |  |  |  | 0.39 |  |  |  |  | 0.21 |  |
Diluted net income per share |  | 0.51 |  |  | 0.14 |  |  |  |  | 0.39 |  |  |  |  | 0.21 |  |
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(1) | Includes a non-cash impairment charge in the second quarter of 2014 of $2.5 million. Please read Note 5, “Goodwill and Other Intangible Assets,” for additional information.
(2) | Includes a $1.2 million non-cash charge in the fourth quarter of 2014. Please read Note 1 to the Consolidated Financial Statements, “Accounting Policies,” for additional information.
(3) | Includes the impact of dividends exceeding earnings under the two-class method, resulting in a $0.05 earnings per share decrease in the fourth quarter of 2014. Please read Note 12, “Net Income Per Share,” for additional information.
(4) | Includes a non-cash impairment charge in the fourth quarter of 2013 of $3.3 million. Please read Note 5, “Goodwill and Other Intangible Assets,” for additional information.
(5) | Includes a non-cash impairment charge in the second quarter of 2013 of $2.7 million. Please read Note 6 to the Consolidated Financial Statements, “Other Assets,” for additional information.
(6) | Includes a $2.0 million tax benefit related to tax years 2009 through 2012. Please read Note 9 to the Consolidated Financial Statements, “Income Taxes,” for additional information.

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