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Summary of Stock Option Activity (Detail) - Stock Option Awards $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended
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Mar. 31, 2020 USD ($) $ / shares shares
Options outstanding, shares |
Beginning Balance | shares | 1,634
Granted | shares | 0
Exercised | shares | (3)
Forfeited/Expired | shares | (30)
Ending Balance | shares | 1,601
Exercisable as of March 31, 2020 | shares | 925
Expected to vest as of March 31, 2020 | shares | 676
Total | shares | 1,601
Weighted Average Exercise Price Per Share |
Beginning Balance | $ / shares | $ 141.60
Granted | $ / shares | 0
Exercised | $ / shares | 130.85
Forfeited/Expired | $ / shares | 152.22
Ending Balance | $ / shares | 141.41
Exercisable as of March 31, 2020 | $ / shares | 137.95
Expected to vest as of March 31, 2020 | $ / shares | 146.13
Total | $ / shares | $ 141.41
Aggregate Intrinsic Value |
Exercised | $ | $ 53
Exercisable as of March 31, 2020 | $ | 0
Expected to vest as of March 31, 2020 | $ | 0
Total | $ | $ 0
Weighted Average Remaining Contractual Term (Years) |
Exercisable as of March 31, 2020 | 4 years 10 months 24 days
Expected to vest as of March 31, 2020 | 9 years
Total | 6 years 8 months 12 days

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- Definition Share options expected to vest at the date of the latest statement of financial position. In other words, unvested shares, net of expected forfeitures. + References No definition available. + Details
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- Definition Weighted average remaining contractual term of share options expected to vest at the date of the latest statement of financial position. Excludes options already vested. + References No definition available. + Details
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- Definition Share-based compensation arrangement by share-based payment award options outstanding weighted average remaining contractual term. + References No definition available. + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Weighted average price of options that were either forfeited or expired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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