Development and License Agreements (Tables)

3 Months Ended

Mar. 31, 2018

Development And License Agreements [Abstract]

Summary of Prepaid R&D Asset and Manufacturing Efficiency Asset

The following table summarizes the amounts of prepaid R&D asset and manufacturing efficiency asset at March 31, 2018 and December 31, 2017 (in thousands).

	March 31, 2018		December 31, 2017
Prepaid R&D asset - current (1)	$	84	$	114
Prepaid R&D asset - non-current (2)		2,155		2,162
Manufacturing efficiency asset (2)		1,778		1,839

(1) Included in “Other current assets” in the Company's consolidated balance sheets.

(2) Included in “Other assets” in the Company's consolidated balance sheets.

Summary of Amounts Payable and Amounts Receivable from Fresenius

The following table summarizes the amounts of the Company’s payables to Fresenius and receivables from Fresenius at March 31, 2018 and December 31, 2017 (in thousands).

	March 31, 2018		December 31, 2017
Payables to Fresenius (1)	$	4,930	$	4,687
Receivables from Fresenius (2)		1,400		231

(1) Included in “Accounts Payable” and “Accrued Liabilities” in the Company's consolidated balance sheets.

(2) Included in “Other current assets” in the Company's consolidated balance sheets.