Debt Long term debt (Tables)

3 Months Ended

Mar. 31, 2017

Long-term Debt, Unclassified [Abstract]

Schedule of Maturities of Long-term Debt [Table Text Block]

Estimated future principal payments due under the Loan and Security Agreement are as follows:

Years Ending December 31,	(in thousands)
2017	$	2,369.5
2018	2,524.9
Total	$	4,894.4