Common Stock Activity [Roll Forward]

No definition available.

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- Definition

Value of all classes of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares exclude common shares repurchased by the entity and held as treasury shares.

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- Definition

Value, before forfeiture, of shares granted under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

+ References

No definition available.

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- Definition

Value, after forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

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- Definition

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Capital Stock - Schedule of Common Stock Activity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Common Stock Activity [Roll Forward]
Beginning balance			$ 242,693
Ending balance	$ 253,773		253,773
Common Stock
Common Stock Activity [Roll Forward]
Beginning balance	245,887	$ 232,167	242,693	$ 229,127
Stock compensation expense	7,403	830	10,695	4,352
Restricted and performance stock awards	(170)	(226)
Ending balance	253,773	233,786	253,773	233,786
Treasury Cost
Common Stock Activity [Roll Forward]
Beginning balance	(329,615)	(328,081)	(326,156)	(303,566)
Stock compensation expense	0	0	0	0
Restricted and performance stock awards	170	226
Ending balance	(329,439)	(327,997)	(329,439)	(327,997)
Restricted and performance stock awards \| Common Stock
Common Stock Activity [Roll Forward]
Restricted and performance stock awards			(1,502)	(2,464)
Restricted and performance stock awards \| Treasury Cost
Common Stock Activity [Roll Forward]
Restricted and performance stock awards			1,502	2,464
Stock options exercised \| Common Stock
Common Stock Activity [Roll Forward]
Stock compensation expense	244	677	1,478	2,433
Stock options exercised \| Treasury Cost
Common Stock Activity [Roll Forward]
Stock compensation expense	126	330	683	1,307
Treasury shares purchased \| Common Stock
Common Stock Activity [Roll Forward]
Treasury shares purchased	0	0	0	0
Treasury shares purchased \| Treasury Cost
Common Stock Activity [Roll Forward]
Treasury shares purchased	(163)	(524)	(5,511)	(8,141)
Employee stock purchase program \| Common Stock
Common Stock Activity [Roll Forward]
Stock compensation expense	409	338	409	338
Employee stock purchase program \| Treasury Cost
Common Stock Activity [Roll Forward]
Stock compensation expense	$ 43	$ 52	43	52
Share repurchase program \| Common Stock
Common Stock Activity [Roll Forward]
Stock compensation expense			0	0
Share repurchase program \| Treasury Cost
Common Stock Activity [Roll Forward]
Stock compensation expense			$ 0	$ (20,113)