Concentration of Business Risk (Details)	3 Months Ended											12 Months Ended
	Mar. 31, 2014 Revenue [Member] Partner A [Member]	Mar. 31, 2013 Revenue [Member] Partner A [Member]	Mar. 31, 2014 Revenue [Member] Partner B [Member]	Mar. 31, 2013 Revenue [Member] Partner B [Member]	Mar. 31, 2014 Revenue [Member] Partner C [Member]	Mar. 31, 2013 Revenue [Member] Partner C [Member]	Mar. 31, 2014 Revenue [Member] Partner D [Member]	Mar. 31, 2013 Revenue [Member] Partner D [Member]	Mar. 31, 2014 Revenue [Member] Partner E [Member]	Mar. 31, 2013 Revenue [Member] Partner E [Member]	Mar. 31, 2014 Contract Receivables [Member] Significant Partners [Member] Partner	Dec. 31, 2013 Contract Receivables [Member] Significant Partners [Member] Partner
Concentration Risk [Line Items]
Concentration percentage (in hundredths)	36.00%	9.00%	27.00%	1.00%	12.00%	23.00%	12.00%	6.00%	0.00%	58.00%	89.00%	91.00%
Number of significant partners											2	3