Summarized Balance Sheet Information of Reportable Segments and Consolidated (Detail) - USD ($) $ in Millions	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
ASSETS
Assets	$ 712.3		$ 700.9
Cash and cash equivalents	34.6		35.7	$ 44.9
Other unallocated assets	5.5		8.2
LIABILITIES
liabilities	565.0		536.6
Long-term debt	342.2		314.4
Common stock warrant liability	4.2	$ 6.1	6.9	$ 7.6	$ 11.1	$ 5.6
Deferred income taxes	5.9		6.7
Other unallocated liabilities	6.9		4.1
Corporate and Other
ASSETS
Cash and cash equivalents	13.0		20.4
Operating Segments | RANA
ASSETS
Assets	480.6		460.6
Cash and cash equivalents	15.8		8.1
LIABILITIES
liabilities	109.2		108.2
Operating Segments | RAEU
ASSETS
Assets	213.2		211.7
Cash and cash equivalents	5.8		7.2
LIABILITIES
liabilities	$ 96.6		$ 96.3