Restatement of Financial Statements - Consolidated Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Impact of Restatement on the Condensed Consolidated Financial Statements
Maturity of Time Deposits	91 days
Royalty revenues	$ 1,119	$ 605
Total revenue	44,194	28,738
Selling, general and administrative	25,160	19,403
Total costs and expenses	37,757	24,704
Operating income (loss)	6,437	4,034
Interest expense non-recourse liability related to sale of future royalties	(1,279)	(759)
Total other expense	(1,412)	(3,210)
Earnings (loss) before income taxes	5,025	824
Income tax expense	200	86
Net income (loss)	4,825	738
As Previously Reported
Impact of Restatement on the Condensed Consolidated Financial Statements
Total revenue	43,075	28,133
Selling, general and administrative		19,402
Total costs and expenses		24,703
Operating income (loss)	5,318	3,430
Total other expense	(133)	(2,451)
Earnings (loss) before income taxes	5,185	979
Income tax expense	198	62
Net income (loss)	4,987	917
Restatement Adjustments
Impact of Restatement on the Condensed Consolidated Financial Statements
Royalty revenues	1,119	605
Total revenue	1,119	605
Operating income (loss)	1,119	605
Interest expense non-recourse liability related to sale of future royalties	(1,279)	(759)
Total other expense	(1,279)	(759)
Earnings (loss) before income taxes	(160)	(154)
Net income (loss)	(160)	(154)
Other Corrections
Impact of Restatement on the Condensed Consolidated Financial Statements
Selling, general and administrative		1
Total costs and expenses		1
Operating income (loss)		(1)
Earnings (loss) before income taxes		(1)
Income tax expense	2	24
Net income (loss)	$ (2)	$ (25)