Commitments and Contingencies (Details)	1 Months Ended
Dec. 31, 2012
Commitments and Contingencies
New collective bargaining agreement term	5 years

Represents the term under a collective bargaining agreement with the International Brotherhood of Electrical Workers (IBEW).

No definition available.

Name:	hwtl_InternationalBrotherhoodOfElectricalWorkersNewCollectiveBargainingAgreementTerm
Namespace Prefix:	hwtl_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration