Segment Information - Accounts Receivable (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2015
Customer D [Domain] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	24.00%		32.60%
Customer B [Domain]
Concentration Risk [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	15.00%	14.30%
Customer B [Domain] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Entity-Wide Revenue, Major Customer, Percentage			15.40%
Customer A [Domain]
Concentration Risk [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	41.20%	42.30%
Customer A [Domain] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	37.70%		10.40%