Summarized Balance Sheet Information of Reportable Segments and Consolidated (Detail) - USD ($) $ in Millions	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
ASSETS
Assets	$ 671.0		$ 645.5
Cash and cash equivalents	18.4		27.2	$ 40.2
Other unallocated assets	3.4		5.9
LIABILITIES
liabilities	624.0		586.1
Long-term debt	379.5		356.5
Common stock warrant liability	2.1	$ 1.9	4.4	$ 6.1	$ 7.5	$ 6.9
Deferred income taxes, net	2.5		2.5
Other unallocated liabilities	3.2		3.8
Corporate and Other
ASSETS
Cash and cash equivalents	4.4		9.9
Operating Segments | RANA
ASSETS
Assets	449.6		431.8
Cash and cash equivalents	8.7		11.5
LIABILITIES
liabilities	129.7		119.9
Operating Segments | RAEU
ASSETS
Assets	213.6		197.9
Cash and cash equivalents	5.3		5.7
LIABILITIES
liabilities	$ 107.0		$ 99.0