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Debt and Credit Facility - Additional Information (Details) - USD ($) | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020 | May 01, 2020 | Apr. 28, 2020 | Nov. 26, 2019
Debt Instrument |  |  |  |  |  |
Interest expense capitalized | $ 100,000 | $ 300,000 |  |  |  |
Revolving Credit Facility |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | 375,000,000.0 |  |  |  |  |
Senior Notes Due 2025 | Senior Notes |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |
Debt instrument contractual rate (percent) |  |  |  | 6.50% | 6.50% |
Debt issuance, percentage of principal amount |  |  |  | 101.00% | 100.00% |
Debt principal amount |  |  |  | $ 50,000,000.0 | $ 300,000,000.0 |
Unamortized debt issuance costs | 5,000,000.0 |  |  |  |  |
Interest expense | $ 6,000,000.0 |  |  |  |  |
Effective interest rate (percent) | 6.80% |  |  |  |  |
Fair value of outstanding debt | $ 371,300,000 |  | $ 376,800,000 |  |  |
Senior Notes Due 2028 | Senior Notes |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |
Debt instrument contractual rate (percent) |  |  |  |  |  | 4.625%
Debt issuance, percentage of principal amount |  |  |  |  |  | 100.00%
Debt principal amount |  |  |  |  |  | $ 500,000,000.0
Unamortized debt issuance costs | 6,300,000 |  |  |  |  |
Interest expense | $ 6,000,000.0 | $ 6,000,000.0 |  |  |  |
Effective interest rate (percent) | 4.80% |  |  |  |  |
Fair value of outstanding debt | $ 511,700,000 |  | $ 521,300,000 |  |  |

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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