Segment Information - Revenue by Major Customer (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2015
Customer A [Domain]
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	41.20%	42.30%
Customer B [Domain]
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	15.00%	14.30%
Accounts Receivable [Member] | Customer A [Domain]
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	37.70%		10.40%
Accounts Receivable [Member] | Customer B [Domain]
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Percentage			15.40%