Financial Assets and Liabilities and Non-Financial Assets and Liabilities Measured at Fair Value Additional Information (Detail) (USD $) In Millions, unless otherwise specified		0 Months Ended
Jun. 30, 2014 Interest Rate Cap	Sep. 13, 2013 Strategic Promotional Partnership and Ad Sales Arrangement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Payment towards notional amount of term loans	$ 71.3
Promotion period		5 years
Amount of promotion		$ 75.0
Percentage ownership of fully diluted shares of Pulser equity		15.00%

Nominal or face amount used to calculate payments on the derivative liability.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant