Price at closing of a single share of a number of saleable stocks of a company.

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

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No definition available.

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- Definition

Weighted average period over which unrecognized compensation related to stock options 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.

+ References

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- Definition

Period from grant date that an share-based payments award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment awards number of units eligible to vest as a multiple of number of units granted.

+ References

No definition available.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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- Definition

Aggregate number of common shares reserved for future issuance.

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-Publisher FASB
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- Definition

Amount of tax benefit from exercise of option under share-based payment arrangement.

+ References

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- Definition

Amount of cash inflow from exercise of option under share-based payment arrangement.

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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.

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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.

+ References

No definition available.

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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- Definition

Number of shares issued under share-based payment arrangement.

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- Definition

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Share-Based Compensation - Textual (Details) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($) $ / shares shares	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) $ / shares shares	Jun. 30, 2018 USD ($)	May 07, 2019 shares	Dec. 31, 2018 USD ($)
Share-based Compensation Plans (Textual)
Share-based compensation expense	$ 2,800	$ 2,400	$ 5,100	$ 4,100
Excess tax benefit from share-based compensation transactions	$ (16)	$ 399	306	1,800
Cash received from option exercises			$ 338	$ 2,200
Stock Incentive Plan of 2019
Share-based Compensation Plans (Textual)
Number of shares authorized under stock incentive plan (in shares) \| shares					2,400,000
Common stock available for future grants under share-based compensation plans (in shares) \| shares	2,388,937		2,388,937
Stock Incentive Plans After 2012
Share-based Compensation Plans (Textual)
Vesting period			5 years
Stock options
Share-based Compensation Plans (Textual)
Stock option award vesting period			10 years
Outstanding in-the-money stock options, intrinsic value	$ 19,800		$ 19,800			$ 26,600
Restricted stock units
Share-based Compensation Plans (Textual)
Corporation granted options to purchase restricted stock performance units (in shares) \| shares			379,260
Stock issued from exercises (in shares) \| shares			123,686
Unrecognized compensation expense	27,600		$ 27,600
Unrecognized compensation expense, period for recognition			3 years 6 months
Restricted stock units \| Minimum
Share-based Compensation Plans (Textual)
Restricted stock performance units eligible to vest as a multiple of number of units granted			0.5
Restricted stock units \| Maximum
Share-based Compensation Plans (Textual)
Restricted stock performance units eligible to vest as a multiple of number of units granted			1.5
Equity Option
Share-based Compensation Plans (Textual)
Weighted-average remaining contractual terms for outstanding stock options			5 years 2 months 12 days
Weighted-average remaining contractual terms for exercisable stock options			4 years 9 months 18 days
Outstanding in-the-money stock options, intrinsic value	7,500		$ 7,500
Exercisable in-the-money stock options, intrinsic value	$ 6,800		$ 6,800
Closing price of common stock (dollars per share) \| $ / shares	$ 41.11		$ 41.11
Unrecognized compensation expense	$ 901		$ 901
Unrecognized compensation expense, period for recognition			2 years 1 month 6 days