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Capital Stock - Non-Vested Stock Option Activity and Related Information (Detail) - $ / shares shares in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Options |  |  |
Options Outstanding Non-Vested Stock Options - beginning of year (shares) | 2,094 | 3,510 | 1,800
Stock options granted (in shares) | 0 | 0 | 2,629
Options, Vested (shares) | (1,309) | (1,384) | (807)
Options, Forfeited (shares) | (26) | (32) | (112)
Options Outstanding Non-Vested Stock Options - end of year (shares) | 759 | 2,094 | 3,510
Weighted-Average Grant Date Fair Value |  |  |
Weighted-Average Grant Date Fair Value, Outstanding non-vested stock options - beginning of Year (dollars per share) | $ 1.97 | $ 2.26 | $ 4.25
Weighted-average grant-date fair value of options granted (in dollars per share) | 0 | 0 | 1.53
Weighted-Average Grant Date Fair Value, Vested (dollars per share) | 2.22 | 2.64 | 4.18
Weighted-Average Grant Date Fair Value, Forfeited (dollars per share) | 1.73 | 4.71 | 3.33
Weighted-Average Grant Date Fair Value, outstanding non-vested stock options - end of year (dollars per share) | $ 1.53 | $ 1.97 | $ 2.26
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |  |
Employee stock compensation and other (in shares) (note 12) | 0 | 0 | 0

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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Number of non-vested options outstanding. + References No definition available. + Details
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