Commitments and Contingencies - Contingencies (Details) (USD $)	0 Months Ended	3 Months Ended		6 Months Ended
	May 07, 2014	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Settlement Agreement [Member]	Dec. 31, 2013 Settlement Agreement [Member]
Loss Contingencies [Line Items]
Maximum possible loss							$ 1,775,000
Loss contingency accrual						0	1,764,000
Write-off of damaged assets		160,000	0	160,000	58,000
Insurance recoveries	$ 250,000