Stock-Based Compensation (Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range) (Details) - $ / shares	Jun. 30, 2017	Dec. 31, 2016
Stock-Based Compensation [Abstract]
Shares Outstanding (in shares)	1,400	15,081
Weighted average exercise price (in dollars per share)	$ 27.70	$ 27.70

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant