Class Of Warrant Or Right, Acquiring Person, Passive Institutional Investor, Percentage Of Ownership Threshold

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Class Of Warrant Or Right, Acquiring Person, Percentage Of Ownership Threshold

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Class Of Warrant Or Right, Number Of Business Days Following Tender Or Exchange Offer To Trigger Exercisability

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Class Of Warrant Or Right, Number Of Rights Issued For Each Share Of Common Stock Outstanding

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Share-based Compensation Arrangement by Share-based Payment Award, Award Required Holding Period

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Share-based Compensation Arrangement by Share-based Payment Award, Offering Period

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Exercise price per share or per unit of warrants or rights outstanding.

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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Aggregate number of common shares reserved for future issuance.

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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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.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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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.

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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).

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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.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of options outstanding, including both vested and non-vested options.

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Number of shares issued under share-based payment arrangement.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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Aggregate change in value for stock issued during the period as a result of employee stock purchase plan.

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Stockholders' Equity - Additional Information (Details) $ / shares in Units, $ in Millions		9 Months Ended
	Sep. 02, 2021 day $ / shares shares	Sep. 30, 2021 USD ($) $ / shares shares	Sep. 30, 2020 USD ($) shares	Nov. 03, 2021 USD ($) $ / shares	Dec. 31, 2020 shares	Jul. 28, 2020 shares	May 16, 2012 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized (in shares)		75,000,000
Common stock par value (in usd per share) \| $ / shares		$ 0.0001
Preferred stock authorized (in shares)		25,000,000
Preferred stock par value (in usd per share) \| $ / shares	$ 0.00001	$ 0.0001
Options outstanding (in shares)		0			0
Common stock outstanding (in shares)		19,468,276			19,384,192
Preferred stock outstanding (in shares)		0			0
Number of rights issued for each share of common stock outstanding (in shares)	1
Number of Series A Junior Participating Preferred Stock shares attributable to each right (in shares)	0.10
Exercise price of right (in usd per share) \| $ / shares	$ 50.95
Acquiring person, percentage of ownership threshold	10.00%
Acquiring person, passive institutional investor, percentage of ownership threshold	20.00%
Number of business days following tender or exchange offer to trigger exercisability \| day	10
Issuance of common stock under the employee stock purchase plan (in shares)		16,015	18,586
Issuance of common stock under the employee stock purchase plan \| $		$ 0.1	$ 0.2
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend rate (in usd per share) \| $ / shares				$ 0.125
Dividends declared \| $				$ 2.4
Unvested RSUs, DSUs and Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, nonvested (in shares)		1,103,851			636,722
Shares issued, weighted average grant date fair value (in usd per share) \| $ / shares		$ 11.02
2012 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)							2,194,986
Shares issued (in shares)		169,944
2012 Equity Plan \| Contingent RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, nonvested (in shares)		519,832
2012 Equity Plan \| Restricted Stock and Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, nonvested (in shares)		496,211
Compensation cost not yet recognized, share-based awards other than options \| $		$ 5.5
Weighted-average period over which cost is expected to be recognized		1 year 8 months 12 days
2012 Equity Plan \| Unvested RSUs, DSUs and Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)		169,944
2012 Equity Plan \| Share-based Payment Arrangement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued, weighted average grant date fair value (in usd per share) \| $ / shares		$ 10.87
2020 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)						1,699,950
2020 Equity Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		1 year
2020 Equity Plan \| Contingent RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
2020 Equity Plan \| Non-contingent RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)		250,000
Award required holding period		2 years
ESPP \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Offering period, maximum		6 months