Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Detail)

v2.4.1.9
Commitments and Contingencies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Y
Dec. 31, 2013
Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]      
Non-cancelable operating leases, initial terms 1hafc_OperatingLeasesInitialNonCancelableLeaseTerms    
Rental expenses $ 6.1us-gaap_LeaseAndRentalExpense $ 5.6us-gaap_LeaseAndRentalExpense $ 5.5us-gaap_LeaseAndRentalExpense