Subsequent Events (Narrative) (Details) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
Mar. 12, 2018	Feb. 27, 2018	Dec. 31, 2017	Dec. 31, 2016
Common share issued			14,946,712	14,977,397
Proceeds from issuance of common stock				$ 10,132
Subsequent Event [Member]
Common share issued	2,445,557	91,815,517
Proceeds from issuance of common stock	$ 1,100	$ 18,400
Cash proceeds from issuance of common stock		$ 1,500

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_CommonStockSharesIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant