Annual report pursuant to Section 13 and 15(d)

Warrants (Details)

v3.3.1.900
Warrants (Details) - $ / shares
12 Months Ended
Feb. 07, 2007
Dec. 31, 2015
Class of Warrant or Right [Line Items]    
Right to purchase one share of common stock, per common share $ 11.41  
Warrants expiration date   Feb. 06, 2014
Warrant [Member]    
Class of Warrant or Right [Line Items]    
Shares issued during period 945,594