XML 28 R12.htm IDEA: XBRL DOCUMENT
v3.20.4

Earnings Per Share | 12 Months Ended
--- | ---
Dec. 31, 2020
Earnings Per Share [Abstract] |
Earnings Per Share | . Earnings Per Share We had 19,951 shares in 2020, 20,441 shares in 2019, and 18,892 shares in 2018 of nonvested restricted stock that were excluded from the calculation of diluted earnings per share, as their effect on earnings per share would be anti-dilutive. The nonvested restricted stock is considered a participating security since the restricted stock contains nonforfeitable rights to dividends. As such, we use the two-class method to compute basic and diluted earnings per share for all periods presented since this method yields the most dilutive result. The following table illustrates the earnings allocation method utilized in the calculation of basic and diluted earnings per share.
|  | Years Ended December 31,
(in thousands, except per-share amounts) |  | 2020 |  | 2019 |  | 2018
Earnings per share numerator: |  |  |  |  |  |
Net income attributable to common shareholders before allocation of earnings to participating securities |  | $ | 270,568 |  |  | $ | 254,286 |  |  | $ | 234,734 |
Earnings allocated to participating securities |  | 448 |  |  | 441 |  |  | 474 |
Net income attributable to common shareholders after allocation of earnings to participating securities |  | $ | 270,120 |  |  | $ | 253,845 |  |  | $ | 234,260 |
Earnings per share denominator: |  |  |  |  |  |
Weighted-average number of shares of common stock outstanding - basic and diluted |  | 10,961 |  |  | 11,166 |  |  | 11,515 |
Earnings per share - basic and diluted |  | $ | 24.64 |  |  | $ | 22.73 |  |  | $ | 20.34 |

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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257 + Details
Name: | us-gaap_EarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration