Basis of Presentation (Narrative) (Details) - Accounting Standards Update 2016-09 [Member] - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Jan. 01, 2017
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Reclassification from cash flows from financing activities	$ 568
Reclassification to cash flows from operating activities	$ 568
Retained Earnings [Member]
New Accounting Pronouncement Or Change In Accounting Principle Retrospective Adjustments [Abstract]
Net cumulative effect adjustment		$ 213
Additional Paid In Capital [Member]
New Accounting Pronouncement Or Change In Accounting Principle Retrospective Adjustments [Abstract]
Net cumulative effect adjustment		$ 213

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

+ References

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- Definition

Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585

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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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