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Stockholders' Equity - Accelerated Share Repurchases (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	1 Months Ended		12 Months Ended
	May 31, 2019	Nov. 30, 2018	Sep. 30, 2019
Accelerated Share Repurchases [Line Items]
Aggregate repurchased value			$ 34,624
Agreement Amount	$ 10,000	$ 16,500
Initial Shares Delivered (in shares)	0.9	1.3
Additional Shares Delivered (in shares)	0.1	0.3
Total Shares Delivered (in shares)	1.0	1.6
Average Price Per Share (in dollars per share)	$ 9.87	$ 10.62
Accelerated Share Repurchase Agreement
Accelerated Share Repurchases [Line Items]
Share repurchases (in shares)			0.7
Aggregate repurchased value			$ 8,100
Average price per share (in dollars per share)			$ 11.35

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- Definition

Accelerated Share Repurchased, Initial Shares Delivered, Shares

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Accelerated Share Repurchases, Average Price Per Share

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Accelerated Shares Repurchased, Additional Shares Delivered, Shares

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- Definition

The amount needed to adjust previously recorded stockholders' equity balances to the actual aggregate amounts paid, whether in cash or other consideration, to acquire all of the shares purchased under an Accelerated Share Repurchase arrangement.

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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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- 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.

+ References

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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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