XML 72 R37.htm IDEA: XBRL DOCUMENT
v3.19.3

Stock-Based Compensation Plans (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2019
Stock Options Plan [Member] |
Summary of Transactions of Company's Stock Option Plans | The following table summarizes the transactions of the Company’s stock option plans for the nine months ended September 30, 2019:
|  | Number of Options |  |  | Weighted Average Exercise Price |  |  | Weighted Average Grant-Date Fair Value |
Outstanding at December 31, 2018 |  |  | 545,249 |  |  | $ | 32.46 |  |  | $ | 36.06 |
Granted - at discount |  |  | 67,230 |  |  | $ | 0.00 |  |  | $ | 71.54 |
- at market value |  |  | 12,539 |  |  | $ | 81.07 |  |  | $ | 22.69 |
Exercised |  |  | (89,119 | ) |  | $ | 13.23 |  |  | $ | 29.30 |
Forfeited |  |  | (11,845 | ) |  | $ | 41.62 |  |  | $ | 36.25 |
Outstanding at September 30, 2019 |  |  | 524,054 |  |  | $ | 32.52 |  |  | $ | 41.44 |
Stock Equivalent Units [Member] |
Summarizes Transactions of SEUs | The following table summarizes the transactions of the Company’s SEUs for the nine months ended September 30, 2019:
|  | Number of SEUs |  |  | Weighted Average Exercise Price |  |  | Weighted Average Grant-Date Fair Value |
Outstanding at December 31, 2018 |  |  | 418,936 |  |  | $ | 3.47 |  |  | $ | 52.45 |
Granted - at discount |  |  | 123,815 |  |  | $ | 0.00 |  |  | $ | 71.47 |
- at market value |  |  | 4,359 |  |  | $ | 81.07 |  |  | $ | 22.69 |
Exercised |  |  | (131,496 | ) |  | $ | 2.40 |  |  | $ | 46.75 |
Forfeited |  |  | (7,750 | ) |  | $ | 2.24 |  |  | $ | 58.08 |
Outstanding at September 30, 2019 |  |  | 407,864 |  |  | $ | 3.61 |  |  | $ | 59.64 |

X
- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value. + 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 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: 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 Reference 3: 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) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=iosp_StockEquivalentUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |