Consolidated Statements of Income (Loss) - USD ($) shares in Thousands, $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Income Statement [Abstract] | |||||||||||
| Revenues | $ 217,371 | $ 205,375 | $ 196,982 | $ 167,410 | $ 211,133 | $ 204,744 | $ 166,665 | $ 134,610 | $ 787,138 | $ 717,152 | $ 651,227 |
| Cost of revenues | 613,526 | 572,994 | 516,883 | ||||||||
| Gross profit | 49,201 | 46,162 | 42,776 | 35,473 | 41,459 | 41,367 | 35,408 | 25,924 | 173,612 | 144,158 | 134,344 |
| Selling, general and administrative expenses | 114,513 | 107,570 | 110,568 | ||||||||
| Operating income | 59,099 | 36,588 | 23,776 | ||||||||
| Other expenses, net (Note 16) | 16,709 | 7,871 | 7,409 | ||||||||
| Income before (benefit) provision for income taxes | 42,390 | 28,717 | 16,367 | ||||||||
| Income tax (benefit) provision | 4,813 | (4,791) | 4,370 | ||||||||
| Net income | 37,577 | 33,508 | 11,997 | ||||||||
| Net loss attributable to redeemable non-controlling interest | 407 | 3,983 | 35 | ||||||||
| Net income attributable to common shareholders | $ 11,593 | $ 10,701 | $ 8,702 | $ 6,988 | $ 23,811 | $ 8,493 | $ 5,831 | $ (644) | $ 37,984 | $ 37,491 | $ 12,032 |
| Net income per share attributable to common shareholders: | |||||||||||
| Basic (in usd per share) | $ 0.25 | $ 0.23 | $ 0.19 | $ 0.15 | $ 0.52 | $ 0.19 | $ 0.13 | $ (0.01) | $ 0.83 | $ 0.82 | $ 0.26 |
| Diluted (in usd per share) | $ 0.24 | $ 0.23 | $ 0.19 | $ 0.15 | $ 0.52 | $ 0.19 | $ 0.13 | $ (0.01) | $ 0.81 | $ 0.82 | $ 0.26 |
| Weighted average common shares outstanding: | |||||||||||
| Basic (in shares) | 46,114 | 45,854 | 45,470 | 45,373 | 45,537 | 45,524 | 45,463 | 45,514 | 45,729 | 45,509 | 46,409 |
| Diluted (in shares) | 47,327 | 46,944 | 46,406 | 45,994 | 45,957 | 45,771 | 45,675 | 45,514 | 46,831 | 45,748 | 46,493 |
| X | ||||||||||
- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The net result for the period of deducting operating expenses from operating revenues. No definition available.
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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