XML 49 R25.htm IDEA: XBRL DOCUMENT
v3.20.4

Equity | 12 Months Ended
--- | ---
Dec. 31, 2020
Equity |
Equity | 15. Equity ​ A summary of shares repurchased under our securities repurchase program, and shares acquired, is as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, |
​ | ​ | 2020 | ​ | 2019 | ​ | 2018 |
Shares repurchased (1) |  | ​ | 890,195 |  | ​ | 3,871,887 |  | ​ | 1,467,886 | ​
Aggregate purchase price | ​ | $ | 29.4 | ​ | $ | 169.2 | ​ | $ | 63.1 | ​
Average purchase price per share | ​ | $ | 33.06 | ​ | $ | 43.71 | ​ | $ | 43.00 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Shares acquired (2) | ​ |  | 137,541 | ​ |  | 114,949 | ​ |  | 119,608 | ​
Aggregate purchase price | ​ | $ | 5.0 | ​ | $ | 4.9 | ​ | $ | 5.8 | ​
Average purchase price per share | ​ | $ | 36.34 | ​ | $ | 42.72 | ​ | $ | 48.61 | ​
(1) | Shares were repurchased under our securities repurchase program. As of December 31, 2020, we had $170.6 million in repurchase authorization under the repurchase program.
(2) | Shares were acquired from employees in connection with a net share settlement feature of employee equity awards.

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

X
- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(e)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
Name: | us-gaap_StockholdersEquityNoteDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration