Deferred Legal Fees and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Additional disclosures
Deferred legal fees	$ 17,437		$ 17,437		$ 22,503
Net book value of intangible assets	15,526		15,526		976
Amortization expense	300	$ 100	900	$ 200
Capitalized patent defense costs
Finite lived intangible assets disclosures
Gross Carrying Amount	16,414		16,414		994
Accumulated Amortization	$ 888		$ 888		$ 18
Capitalized patent defense costs | Minimum
Finite lived intangible assets disclosures
Average Life			9 years 6 months		9 years 6 months
Capitalized patent defense costs | Maximum
Finite lived intangible assets disclosures
Average Life			11 years		11 years