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Stockholders' Equity and Stock Plans - Share Repurchases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Oct. 22, 2021	Jul. 16, 2021	Jan. 24, 2020	Apr. 23, 2018
Equity [Abstract]
Stock repurchase program, authorized amount				$ 57,000	$ 25,000	$ 25,000	$ 25,000
Total number of common shares repurchased (in shares)	1,117,666
Stock repurchased	$ 40,722	$ 7,208	$ 15,022

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Amount of stock repurchase plan authorized.

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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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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate 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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