Commitments and Contingencies (Details)	6 Months Ended
	Jun. 30, 2015 USD ($) item	Dec. 31, 2014 USD ($)	Oct. 07, 2013 USD ($)
Loss Contingencies [Line Items]
Impact to financial position and results of operations, minimum			$ 115,000
HBN liability accrual, impact to financial position and results of operations	$ 89,000	$ 26,000
HBN
Loss Contingencies [Line Items]
Impact to financial position and results of operations, minimum			26,000
Impact to financial position and results of operations, maximum			$ 2,656,000
Assignment Agreement
Loss Contingencies [Line Items]
Number of leases assigned to purchaser | item	6
Period over which company remains secondarily liable	P36M
Outstanding lease guarantee	$ 1,479,000