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Significant Accounting Policies - Additional Information (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Jun. 30, 2021 | Feb. 26, 2019
Accounting Policies [Line Items] |  |  |  |  |  |
Shares authorized to be purchased (up to) (in shares) |  |  |  |  |  | $ 100,000,000
Treasury stock shares (in shares) | 45,225 | 0 | 45,225 | 808,389 |  |
Average price of shares (in dollars per share) | $ 25.02 |  | $ 25.02 | $ 30.91 |  |
Treasury stock, value of acquired shares | $ 1,100,000 |  | $ 1,100,000 | $ 25,000,000.0 |  |
Rental Facilities |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Term of Lease Contract | 5 years |  | 5 years |  |  |
Leasing payment to be received |  |  |  |  | $ 2,300,000 |
Unrecognized lease revenue | $ 500,000 |  | $ 1,000,000.0 |  |  |

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- Definition Amount of lease payment to be received by lessor for operating lease in remainder of current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919396-209981 + Details
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- Definition Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919359-209981 + Details
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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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