XML 47 R24.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Earnings per share | 12 Months Ended
--- | ---
Dec. 31, 2017
Earnings per share [Abstract] |
Earnings per share | 16. Earnings per share The following table presents the calculation of basic and diluted net income per share:
|  | Years ended December 31, |
(in thousands, except share and per share data) |  | 2017 |  |  | 2016 |  |  | 2015 |
Numerator: |  |  |  |  |  |  |  |  |
Net income from continuing operations |  | $ | 82,594 |  |  | $ | 62,524 |  |  | $ | 91,416 |
Interest expense, net of tax |  |  | 2,606 |  |  |  | 3,255 |  |  |  | 3,019 |
Amortization of debt issuance costs, net of tax |  |  | 681 |  |  |  | 781 |  |  |  | 868 |
Net income, adjusted from continuing operations |  |  | 85,881 |  |  |  | 66,560 |  |  |  | 95,303 |
Net loss from discontinued operations |  |  | - |  |  |  | (10,748 | ) |  |  | (28,546 | )
Net income, adjusted |  | $ | 85,881 |  |  | $ | 55,812 |  |  | $ | 66,757 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average number of shares-basic |  |  | 41,816,431 |  |  |  | 40,184,159 |  |  |  | 38,595,435 |
Dilutive securities-equity awards |  |  | 1,115,244 |  |  |  | 1,054,453 |  |  |  | 939,882 |
Dilutive securities-convertible debt |  |  | 7,396,262 |  |  |  | 8,096,500 |  |  |  | 7,720,525 |
Weighted-average number of shares-diluted |  |  | 50,327,937 |  |  |  | 49,335,112 |  |  |  | 47,255,842 |
Net income per share-basic from continuing operations |  | $ | 1.98 |  |  | $ | 1.56 |  |  | $ | 2.37 |
Net loss per share-basic from discontinued operations |  |  | - |  |  |  | (0.27 | ) |  |  | (0.74 | )
Net income per share-basic |  | $ | 1.98 |  |  | $ | 1.29 |  |  | $ | 1.63 |
Net income per share-diluted from continuing operations |  | $ | 1.71 |  |  | $ | 1.35 |  |  | $ | 2.02 |
Net loss per share-diluted from discontinued operations |  |  | - |  |  |  | (0.22 | ) |  |  | (0.61 | )
Net income per share-diluted |  | $ | 1.71 |  |  | $ | 1.13 |  |  | $ | 1.41 |
For the year ending December 31, 2017 and 2016, substantially all of the outstanding stock options to purchase shares of common stock were included in the calculation of diluted earnings per share. For the years ending December 31, 2015, outstanding stock options to purchase approximately 1.4 million shares of common stock, respectively, are not considered in the diluted earnings per share calculation because the exercise price of these options is greater than the average per share closing price during the year and their effect would be anti-dilutive.

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 The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
Name: | us-gaap_EarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration