Discontinued Operations - Revenues and the components of income related to discontinued operations (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations	$ 0	$ (194,000)	$ 0	$ (589,000)
Ruckus Sports LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue from discontinued operations		600,000		600,000
Loss from discontinued operations		$ (200,000)		$ (600,000)