Transactions with Olympus Corporation

12 Months Ended

Dec. 31, 2017

Joint Venture Termination Agreement [Abstract]

3.	Transactions with Olympus Corporation

Under our Joint Venture Termination Agreement (“Termination Agreement”), dated May 8, 2013, with Olympus Corporation (“Olympus”), we were required to pay Olympus a total purchase price of $6.0 million within two years of the date of the Termination Agreement. Pursuant to amendments to the Termination Agreement, dated April 30, 2015 and January 8, 2016, the Company’s repayment obligations were extended through May 8, 2016. We made payments under the Termination Agreement totaling approximately $4.2 million through December 31, 2015, as well as separate payments of $0.5 million each in January 2016 and April 2016, and paid the remaining balance of $0.8 million before the May 8, 2016 due date. There were no outstanding obligations to Olympus as of December 31, 2017.