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v3.20.1

Share-Based Compensation - Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 2 Months Ended | 3 Months Ended | 9 Months Ended | 84 Months Ended
--- | --- | --- | --- | --- | ---
Jan. 31, 2012 | Mar. 31, 2012 | Mar. 31, 2020 | Dec. 31, 2012 | Dec. 31, 2019
Aggregate Intrinsic Value |  |  |  |  |
Outstanding at the end of the period |  |  | $ 563 |  |
Exercisable at the end of the period |  |  | $ 562 |  |
Stock Options |  |  |  |  |
Number of shares |  |  |  |  |
Outstanding at the beginning of the period (in shares) |  |  | 176,888 |  |
Exercised (in shares) |  |  | (12,485) |  |
Outstanding at the end of the period (in shares) |  |  | 164,403 |  | 176,888
Exercisable at the end of the period (in shares) |  |  | 140,473 |  |
Weighted-Average Exercise Price |  |  |  |  |
Outstanding at the beginning of the period (in dollars per share) |  |  | $ 67.14 |  |
Exercised (in dollars per share) |  |  | 32.33 |  |
Outstanding at the end of the period (in dollars per share) |  |  | 69.78 |  | $ 67.14
Exercisable at the end of the period (in dollars per share) |  |  | 66.15 |  |
Weighted-average fair value of options granted during the year (in dollars per share) |  |  | $ 0.00 |  |
Weighted-Average Remaining Contractual Life |  |  |  |  |
Outstanding at the end of the period |  |  | 5 years 4 months 20 days |  |
Exercisable at the end of the period |  |  | 5 months |  |
Restricted Stock | Maximum |  |  |  |  |
Share-Based Compensation |  |  |  |  |
Vesting period |  |  | 12 months |  |
Restricted Stock | Minimum | Employee |  |  |  |  |
Share-Based Compensation |  |  |  |  |
Vesting period |  |  | 4 years |  |
2012 plan |  |  |  |  |
Share-Based Compensation |  |  |  |  |
Options granted (in shares) |  |  | 0 |  |
2019 plan |  |  |  |  |
Share-Based Compensation |  |  |  |  |
Number of shares registered |  |  | 1,000,000 |  |
2004 plan |  |  |  |  |
Number of shares |  |  |  |  |
Granted (in shares) | 0 | 0 | 0 | 0 | 0
Plan 2004 And 2012 | Incentive stock options |  |  |  |  |
Share-Based Compensation |  |  |  |  |
Vesting percentage |  |  | 25.00% |  |
Expiration period |  |  | 10 years |  |
Plan 2004 And 2012 | Incentive stock options | Maximum |  |  |  |  |
Share-Based Compensation |  |  |  |  |
Vesting period |  |  | 4 years |  |

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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 Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + 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 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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