Other Long-Term Liabilities (Tables)

12 Months Ended

Dec. 31, 2016

Payables And Accruals [Abstract]

Summary of Other Long-Term Liabilities

	December 31, 2016		December 31, 2015
7% Series B convertible preferred stock dividend payable	$	2.6	$	2.1
Deferred rent liability		2.2		1.7
Intellectual property purchase liability		0.8		1.6
Deferred tax liability		0.3		0.3
Total	$	5.9	$	5.7