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

No definition available.

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- Definition

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

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No definition available.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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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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Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

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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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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

+ References

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- Definition

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.

+ References

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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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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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.

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- Definition

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.

+ References

No definition available.

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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- Definition

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

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- Definition

Percentage of vesting of share-based compensation awards.

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- Definition

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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Amount of stock repurchase plan authorized.

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Stockholders' Equity - Additional Information (Details) - USD ($)		12 Months Ended
	Feb. 28, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Feb. 26, 2018	May 16, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized (shares)		75,000,000	75,000,000
Common stock par value (usd per share)		$ 0.0001	$ 0.0001
Preferred stock authorized (shares)		25,000,000	25,000,000
Preferred stock par value (usd per share)		$ 0.0001	$ 0.0001
Stock options outstanding (shares)		0	0
Common stock outstanding (shares)		20,135,514	20,525,614
Preferred stock outstanding (shares)		0	0
Dividends declared (usd per share)		$ 0.50	$ 0.75	$ 0.625
Issuance of common stock under the Employee Stock Purchase Plan		$ 256,000	$ 53,000
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend rate (usd per share)	$ 0.125
Dividends declared	$ 2,600,000
Common stock repurchase program, authorized amount					$ 10,000,000.0
2012 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity securities granted (shares)						2,194,986
2012 Equity Plan \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Award vesting percent		33.00%
2012 Equity Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		1 year
2012 Equity Plan \| Restricted Stock and RSUs with contingent performance requirements
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
2011 Long Term Incentive Plan \| Restricted Stock and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested shares outstanding (shares)		393,084	451,493
Compensation cost not yet recognized		$ 3,200,000
Compensation cost not yet recognized, period for recognition		1 year 6 months 26 days
2011 Long Term Incentive Plan \| Restricted Stock and RSUs with contingent performance requirements
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested shares outstanding (shares)		308,960
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity securities granted (shares)		250,000
Award required holding period		2 years
Issuance of common stock under the Employee Stock Purchase Plan (shares)		17,760	3,961
Issuance of common stock under the Employee Stock Purchase Plan		$ 300,000	$ 100,000
Maximum \| ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Offering period		6 months