Business Acquisition (Details) - USD ($)		3 Months Ended		6 Months Ended		12 Months Ended	15 Months Ended
	Dec. 31, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Jun. 30, 2016
Business Acquisition [Line Items]
Net loss		$ 3,530,000	$ 2,424,000	$ 14,974,000	$ 13,156,000
Amortization expense		961,000	$ 179,000	1,921,000	$ 469,000
Goodwill, acquired during period						$ 58,357,000
Octane Fitness
Business Acquisition [Line Items]
Purchase price	$ 115,000,000
Net sales		12,200,000		24,700,000
Net loss				(700,000)
Amortization expense		800,000		1,500,000
Inventory step-up expense		$ 300,000		1,000,000
Measurement period adjustments, assets, goodwill and liabilities				662,000
Acquisition costs				$ 200,000			$ 900,000
JPMorgan Chase Bank, N.A. | Term Loan | Octane Fitness
Business Acquisition [Line Items]
Maximum revolving secured credit line	$ 80,000,000.0					80,000,000.0
Retail
Business Acquisition [Line Items]
Goodwill, acquired during period						58,357,000
Retail | Octane Fitness
Business Acquisition [Line Items]
Goodwill, acquired during period						$ 58,200,000