Equity (Schedule of Performance Stock Activity) (Details) - $ / shares	3 Months Ended	12 Months Ended
Dec. 31, 2018	Sep. 30, 2018
Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount considered issued and outstanding (as percentage of target number of shares)	200.00%
Number of Shares
Non-vested, beginning balance (in shares)	397,777
Granted (in shares)	0
Vested (in shares)	(30,874)
Forfeited (in shares)	(132,579)
Non-vested, ending balance (in shares)	234,324	397,777
Weighted Average Grant Date Fair Value
Non-vested, beginning balance (in usd per share)	$ 8.48
Granted (in usd per share)	0.00	$ 7.62
Vested (in usd per share)	7.14
Forfeited (in usd per share)	7.24
Non-vested, ending balance (in usd per share)	$ 9.35	$ 8.48
Performance Stock Awards
Number of Shares
Non-vested, beginning balance (in shares)	33,333
Granted (in shares)	0
Vested (in shares)	0
Forfeited (in shares)	0
Non-vested, ending balance (in shares)	33,333	33,333
Weighted Average Grant Date Fair Value
Non-vested, beginning balance (in usd per share)	$ 12.25
Granted (in usd per share)	0.00
Vested (in usd per share)	0.00
Forfeited (in usd per share)	0.00
Non-vested, ending balance (in usd per share)	$ 12.25	$ 12.25
Two Thousand Twelve Equity Incentive Plan \| Minimum \| Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	1 year
Two Thousand Twelve Equity Incentive Plan \| Maximum \| Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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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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The weighted average fair value at grant date for nonvested equity-based awards issued 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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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the 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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Percentage of vesting of share-based compensation awards.

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