Stock Repurchase Program, Increase in Authorized Amount

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- Definition

Stock Repurchase Program, Increase in Number of Shares Accepted, Percent of Outstanding Shares

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No definition available.

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- Definition

Stock Repurchase Program, Increase in Number of Shares Authorized to be Repurchased

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No definition available.

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- Definition

Treasury Stock, Shares Acquired, Percent of Outstanding Stock

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No definition available.

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- Definition

Face amount or stated value per share of common stock.

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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

Amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

+ References

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- Definition

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

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

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Earnings per Share and Equity Transactions - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended
	Aug. 15, 2018	Sep. 30, 2018	Dec. 31, 2017
Equity, Class of Treasury Stock [Line Items]
Common stock, par value (in dollars per share)		$ 0.001	$ 0.001
Repurchase of common stock		$ (99,231)
Dutch Auction
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program amount authorized	$ 75,000
Common stock, par value (in dollars per share)	$ 0.001
Percent increase in shares authorized for repurchase	2.00%
Increase in shares authorized for repurchase	10,706,774
Increase in authorized stock repurchase amount	$ 22,500
Shares acquired	46,503,539
Average cost paid per share (in usd per share)	$ 2.10
Shares repurchased as a percentage of outstanding shares	6.00%