Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Cash Flows (Parenthetical)

v3.7.0.1
Consolidated Statements of Cash Flows (Parenthetical) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Common Stock [Member]      
Stock, issuance costs   $ 601 $ 601
Preferred Stock [Member]      
Stock, issuance costs $ 641 $ 641