Summarized Balance Sheet Information of Reportable Segments and Consolidated (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
ASSETS
Assets	$ 645.5	$ 700.9
Cash and cash equivalents	27.2	35.7	$ 61.9
Other unallocated assets	5.9	8.2
LIABILITIES
liabilities	586.1	536.6
Long-term debt	356.5	314.4
Common stock warrant liability	4.4	6.9	$ 5.6	$ 9.3
Deferred income taxes	2.5	6.7
Other unallocated liabilities	3.8	4.1
Corporate and Other
ASSETS
Cash and cash equivalents	9.9	20.4
Operating Segments | RANA
ASSETS
Assets	431.8	460.6
Cash and cash equivalents	11.5	8.1
LIABILITIES
liabilities	119.9	108.2
Operating Segments | RAEU
ASSETS
Assets	197.9	211.7
Cash and cash equivalents	5.7	7.2
LIABILITIES
liabilities	$ 99.0	$ 96.3