Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2015

Accounting Policies [Abstract]

Summary of Non-affiliated Customer and Client Concentrations as Percentage of Product Revenue and Service Fee Revenue

A summary of the nonaffiliated customer and client concentrations as a percentage of product revenue and service fee revenue, respectively, is as follows:

	Six Months Ended
	June 30,
	2015			2014
Product Revenue (as a percentage of total Product Revenue):
Customer 1		15	%		12	%
Customer 2		14	%		12	%
Service Fee Revenue (as a percentage of total Service Fee Revenue):
Client 1		15	%		—