Number of Board of Directors Members Granted Restricted Stock Awards

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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- Definition

The cash outflow to reacquire common stock during the period.

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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).

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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.

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No definition available.

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- Definition

Percentage of vesting of share-based compensation awards.

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- Definition

Amount of stock repurchase plan authorized.

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No definition available.

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

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Stockholders' Equity (Details)		1 Months Ended	3 Months Ended
Stockholders' Equity (Details)	May 17, 2016 director shares	May 01, 2017 USD ($) shares	Mar. 31, 2017 USD ($) $ / shares shares	Mar. 31, 2016 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares repurchased during the period (in shares) \| shares			2,044,981	995,650
Average purchase price per share for share repurchase (in dollars per share) \| $ / shares			$ 16.70	$ 14.88
Payments for repurchase of common stock			$ 34,156,000	$ 14,820,000
Stock repurchase program, authorized amount			156,800,000.0
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards expense (less than)			$ 100,000
Restricted stock awards \| 2015 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock awards issued (in shares) \| shares	8,919
Number of Board of Directors members granted restricted stock awards \| director	3
Date of issue \| Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
August 17, 2016 \| Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
November 17, 2016 \| Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
February 17, 2017 \| Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares repurchased during the period (in shares) \| shares		327,963
Payments for repurchase of common stock		$ 5,600,000