Quarterly report pursuant to Section 13 or 15(d)

The Company - Additional Information (Detail)

v2.4.0.8
The Company - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
0 Months Ended
May 23, 2013
Apr. 23, 2013
Organization Consolidation And Presentation Of Financial Statements [Abstract]    
Initial public offering, shares   13,333,333
Initial public offering, price per share   $ 12.50
Net proceeds to HASI from offering $ 9.5 $ 160.0
Stock issuance costs and IPO and formation transaction costs   $ 4.9
Underwriters shares of common stock 818,356