XML 49 R36.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Earnings per Common Share (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2018
Earnings Per Share [Abstract] |
Earnings Per Common Share | The calculation of basic and diluted EPS was as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
| (In thousands, except per share data)
Basic earnings per Class A common share |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |
Net income | $ | 29,827 |  |  | $ | 19,266 |  |  | $ | 99,858 |  |  | $ | 60,020 |
Denominator: |  |  |  |  |  |  |
Weighted-average Class A shares issued and outstanding | 52,105 |  |  | 50,013 |  |  | 51,774 |  |  | 50,234 |
Basic earnings per Class A common share | $ | 0.57 |  |  | $ | 0.39 |  |  | $ | 1.93 |  |  | $ | 1.19 |
Diluted earnings per Class A common share |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |
Net income | $ | 29,827 |  |  | $ | 19,266 |  |  | $ | 99,858 |  |  | $ | 60,020 |
Denominator: |  |  |  |  |  |  |
Weighted-average Class A shares issued and outstanding | 52,105 |  |  | 50,013 |  |  | 51,774 |  |  | 50,234 |
Dilutive potential common shares: |  |  |  |  |  |  |
Stock options | 343 |  |  | 759 |  |  | 441 |  |  | 706 |
Restricted stock units | 1,236 |  |  | 1,418 |  |  | 1,296 |  |  | 1,368 |
Performance based restricted stock units | 705 |  |  | 259 |  |  | 789 |  |  | 268 |
Employee stock purchase plan | 1 |  |  | 3 |  |  | 1 |  |  | 1 |
Diluted weighted-average Class A shares issued and outstanding | 54,390 |  |  | 52,452 |  |  | 54,301 |  |  | 52,577 |
Diluted earnings per Class A common share | $ | 0.55 |  |  | $ | 0.37 |  |  | $ | 1.84 |  |  | $ | 1.14 |
Antidilutive Shares | The following table shows the weighted-average number of shares excluded from the diluted EPS calculation:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
| (In thousands)
Class A common stock |  |  |  |  |  |  |
Options to purchase Class A common stock | — |  |  | 56 |  |  | — |  |  | 73 |
Performance based restricted stock units | 134 |  |  | 424 |  |  | 101 |  |  | 216 |
Total options and restricted stock units | 134 |  |  | 480 |  |  | 101 |  |  | 289 |

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration