Debt (Narrative) (Details) - Jun. 30, 2015 - USD ($) $ in Thousands	Total
Line of Credit Facility [Line Items]
Unsecured revolving line of credit	$ 50,000
Available for borrowings under revolving line of credit	$ 50,000
Ratio of consolidated indebtedness to earnings before interest, taxes, depreciation and amortization, maximum allowed	3.25
Ratio of consolidated earnings before interest, taxes, depreciation and amortization expense, minimum allowed	3.00
Minimum [Member]
Line of Credit Facility [Line Items]
Quarterly commitment fee	0.175%
Maximum [Member]
Line of Credit Facility [Line Items]
Quarterly commitment fee	0.30%
Base Rate Determined In Accordance With Loan Agreement [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Variable interest rate spread	0.00%
Base Rate Determined In Accordance With Loan Agreement [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Variable interest rate spread	0.50%
London Interbank Offered Rate [Member \| Minimum [Member]
Line of Credit Facility [Line Items]
Variable interest rate spread	1.125%
London Interbank Offered Rate [Member \| Maximum [Member]
Line of Credit Facility [Line Items]
Variable interest rate spread	2.00%
During Event Of Default [Member]
Line of Credit Facility [Line Items]
Variable interest rate spread	2.00%

Loan agreement, quarterly commitment fee paid on unused portion of line of credit, percentage.

No definition available.

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- Definition

Loan agreement, ratio of consolidated earnings before interest, taxes, depreciation and amortization expense, minimum allowed.

+ References

No definition available.

+ Details

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- Definition

Loan agreement, ratio of consolidated indebtedness to earnings before interest, taxes, depreciation and amortization, maximum allowed.

+ References

No definition available.

+ Details

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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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.

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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- Details

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- Details

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- Details

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- Details

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