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Stock-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award |  |
Stock-based compensation expense | $ 1.2 | $ 1.3
Restricted Stock |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Restricted stock granted (in shares) | 134,782 |
Restricted stock granted, grant date fair value (in dollars per share) | $ 12.65 |
Restricted stock surrendered, forfeited in period (in dollars per share) | 42,629 |
Employee restricted stock award, vesting period | 2 years |
Nonvested restricted shares outstanding (in shares) | 159,498 |
Unrecognized compensation cost | $ 1.4 |
Unrecognized compensation cost, recognition period | 36 months |
Restricted Stock | Executive Officer |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Employee restricted stock award, vesting period | 3 years |
Restricted Stock | Non-Employee Director |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Non-employee restricted stock award vest grant over period | 1 year |
Restricted Stock | Grant Date |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Restricted stock award, vesting percentage | 33.33% |
Restricted Stock | Grant Date | Executive Officer |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Restricted stock award, vesting percentage | 40.00% |
Restricted Stock | First Anniversary |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Restricted stock award, vesting percentage | 33.33% |
Restricted Stock | First Anniversary | Executive Officer |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Restricted stock award, vesting percentage | 20.00% |
Restricted Stock | Second Anniversary |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Restricted stock award, vesting percentage | 33.33% |
Restricted Stock | Second Anniversary | Executive Officer |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Restricted stock award, vesting percentage | 20.00% |
Restricted Stock | Third Anniversary | Executive Officer |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Restricted stock award, vesting percentage | 20.00% |
Amended and Restated 2013 Equity Incentive Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Number of shares reserved for issuance (in shares) | 1,700,000 |
Shares available for issuance (in shares) | 636,896 |

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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + 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 (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options. + 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 (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + 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)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + 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)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Number of shares authorized for issuance under share-based payment arrangement. + 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 (a)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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