Line of Credit (Details) - The Credit Agreement - Line of Credit $ in Millions	12 Months Ended
Dec. 31, 2016 USD ($)
Line of Credit Facility [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity	$ 25.0
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.00%
London Interbank Offered Rate (LIBOR)
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate Description	1.50%

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

No definition available.

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Balance Type:	na
Period Type:	duration

- 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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ 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

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Period Type:	duration

- Details

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Namespace Prefix:
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- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
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Period Type:

- Details

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Period Type: