Subsequent events (Details) (Subsequent Event, Maximum, USD $) In Thousands, unless otherwise specified	0 Months Ended
Apr. 01, 2013
Subsequent Event \| Maximum
Subsequent events:
Maximum amount of common stock approved by the entity for a stock repurchase program	$ 10,000

The maximum amount of common stock approved by the entity for a stock repurchase program in the open market, exclusive of any commissions, markups or expenses.

No definition available.

Name:	wifi_MaximumAmountOfCommonStockApprovedByEntityForStockRepurchaseProgram
Namespace Prefix:	wifi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration