Subsequent Events (Details)	Feb. 23, 2012 years
Subsequent Events [Abstract]
Subsequent Event, Term of Contract	3

Period the contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	hts_SubsequentEventTermOfContract
Namespace Prefix:	hts_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant