Koppers Holdings Inc. Quarterly Unrecognized Tax Benefits in USD from Q4 2010 to Q3 2024

Taxonomy & unit
us-gaap: USD
Description
Amount of unrecognized tax benefits.
Summary
Koppers Holdings Inc. quarterly Unrecognized Tax Benefits history and growth rate from Q4 2010 to Q3 2024.
  • Koppers Holdings Inc. Unrecognized Tax Benefits for the quarter ending September 30, 2024 was $1.6M, a 6.67% increase year-over-year.
Unrecognized Tax Benefits, Quarterly (USD)
Unrecognized Tax Benefits, YoY Quarterly Growth (%)
Period Value YoY Chg Change % Date Report Filed
Q3 2024 $1.6M +$100K +6.67% Sep 30, 2024 10-Q 2024-11-08
Q2 2024 $1.6M +$100K +6.67% Jun 30, 2024 10-Q 2024-08-08
Q1 2024 $1.5M +$100K +7.14% Mar 31, 2024 10-Q 2024-05-03
Q4 2023 $1.5M +$100K +7.14% Dec 31, 2023 10-Q 2024-11-08
Q3 2023 $1.5M +$100K +7.14% Sep 30, 2023 10-Q 2023-11-03
Q2 2023 $1.5M $0 0% Jun 30, 2023 10-Q 2023-08-03
Q1 2023 $1.4M -$100K -6.67% Mar 31, 2023 10-Q 2023-05-05
Q4 2022 $1.4M -$100K -6.67% Dec 31, 2022 10-K 2024-02-28
Q3 2022 $1.4M -$900K -39.1% Sep 30, 2022 10-Q 2022-11-04
Q2 2022 $1.5M -$1M -40% Jun 30, 2022 10-Q 2022-08-04
Q1 2022 $1.5M -$1M -40% Mar 31, 2022 10-Q 2022-05-06
Q4 2021 $1.5M -$1M -40% Dec 31, 2021 10-K 2024-02-28
Q3 2021 $2.3M +$400K +21.1% Sep 30, 2021 10-Q 2021-11-04
Q2 2021 $2.5M +$300K +13.6% Jun 30, 2021 10-Q 2021-08-06
Q1 2021 $2.5M +$400K +19% Mar 31, 2021 10-Q 2021-05-07
Q4 2020 $2.5M +$400K +19% Dec 31, 2020 10-K 2024-02-28
Q3 2020 $1.9M -$200K -9.52% Sep 30, 2020 10-Q 2020-11-04
Q2 2020 $2.2M -$200K -8.33% Jun 30, 2020 10-Q 2020-08-05
Q1 2020 $2.1M -$200K -8.7% Mar 31, 2020 10-Q 2020-05-07
Q4 2019 $2.1M -$4.9M -70% Dec 31, 2019 10-K 2023-02-27
Q3 2019 $2.1M -$6.4M -75.3% Sep 30, 2019 10-Q 2019-11-07
Q2 2019 $2.4M -$6.4M -72.7% Jun 30, 2019 10-Q 2019-08-08
Q1 2019 $2.3M -$6.5M -73.9% Mar 31, 2019 10-Q 2019-05-03
Q4 2018 $7M -$1.7M -19.5% Dec 31, 2018 10-K 2022-02-23
Q3 2018 $8.5M +$1.6M +23.2% Sep 30, 2018 10-Q 2018-11-08
Q2 2018 $8.8M +$1.8M +25.7% Jun 30, 2018 10-Q 2018-08-09
Q1 2018 $8.8M -$1.3M -12.9% Mar 31, 2018 10-Q 2018-05-03
Q4 2017 $8.7M -$1M -10.3% Dec 31, 2017 10-K 2021-02-24
Q3 2017 $6.9M -$600K -8% Sep 30, 2017 10-Q 2017-11-09
Q2 2017 $7M -$800K -10.3% Jun 30, 2017 10-Q 2017-08-03
Q1 2017 $10.1M +$2.3M +29.5% Mar 31, 2017 10-Q 2017-05-08
Q4 2016 $9.7M +$2M +26% Dec 31, 2016 10-K 2020-02-27
Q3 2016 $7.5M +$900K +13.6% Sep 30, 2016 10-Q 2016-11-03
Q2 2016 $7.8M +$900K +13% Jun 30, 2016 10-Q 2016-08-04
Q1 2016 $7.8M +$1M +14.7% Mar 31, 2016 10-Q 2016-05-06
Q4 2015 $7.7M +$500K +6.94% Dec 31, 2015 10-K 2019-03-01
Q3 2015 $6.6M +$800K +13.8% Sep 30, 2015 10-Q 2015-11-05
Q2 2015 $6.9M +$800K +13.1% Jun 30, 2015 10-Q 2015-08-06
Q1 2015 $6.8M +$700K +11.5% Mar 31, 2015 10-Q 2015-05-08
Q4 2014 $7.2M +$1.1M +18% Dec 31, 2014 10-K 2018-02-27
Q3 2014 $5.8M -$1M -14.7% Sep 30, 2014 10-Q 2014-11-10
Q2 2014 $6.1M -$1.2M -16.4% Jun 30, 2014 10-Q 2014-08-07
Q1 2014 $6.1M -$1.7M -21.8% Mar 31, 2014 10-Q 2014-05-07
Q4 2013 $6.1M -$1.6M -20.8% Dec 31, 2013 10-K 2017-02-24
Q3 2013 $6.8M -$1M -12.8% Sep 30, 2013 10-Q 2013-11-07
Q2 2013 $7.3M -$800K -9.88% Jun 30, 2013 10-Q 2013-08-08
Q1 2013 $7.8M -$2.3M -22.8% Mar 31, 2013 10-Q 2013-05-03
Q4 2012 $7.7M -$2.2M -22.2% Dec 31, 2012 10-K 2016-02-29
Q3 2012 $7.8M Sep 30, 2012 10-Q 2012-11-09
Q2 2012 $8.1M Jun 30, 2012 10-Q 2012-08-09
Q1 2012 $10.1M Mar 31, 2012 8-K 2012-06-27
Q4 2011 $9.9M +$3.4M +52.3% Dec 31, 2011 10-K 2015-03-02
Q4 2010 $6.5M Dec 31, 2010 10-K 2014-03-03
* An asterisk sign (*) next to the value indicates that the value is likely invalid.