CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ INVESTMENT (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended				12 Months Ended
	Dec. 31, 2014	Mar. 29, 2014	Dec. 31, 2013	Mar. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at the beginning of year		$ 99.9		$ 94.2	$ 99.9	$ 94.2	$ 80.4
Balance at the beginning of year (shares)		16,150,794			16,150,794
Balance at the beginning of year (shares)		263,145			263,145
Net (loss) earnings	4.6	(8.6)	(8.9)	(15.1)	(45.6)	(8.3)	9.5
Other comprehensive earnings (loss)					(19.4)	6.0	(1.5)
Exercise of stock options					3.2	1.6	2.5
Exercise of stock options (shares)					131,974	74,430	143,652
Warrants exercised					33.2	2.5	5.1
Warrants exercised (shares)					629,301	46,837	96,444
Shares withheld and repurchased related to minimum statutory tax withholding requirements and shares repurchased to net share settlements					(38.5)	(6.6)	(6.4)
Share-based compensation expense					6.2	10.5	4.6
Excess tax benefit on share- based awards					3.2
Balance at the end of year	42.2		99.9		42.2	99.9	94.2
Balance at the end of year (shares)	16,986,493		16,150,794		16,986,493	16,150,794
Balance at the end of year (shares)	732,340		263,145		732,340	263,145
Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at the beginning of year		0.2		0.1	0.2	0.1	0.1
Balance at the beginning of year (shares)		16,150,794		16,026,374	16,150,794	16,026,374	15,671,041
Issuance of restricted stock (shares)					157,932	139,345	150,200
Cancellation of restricted stock (shares)					(83,508)	(136,192)	(34,963)
Exercise of stock options					0	0.1
Exercise of stock options (shares)					131,974	74,430	143,652
Warrants exercised (shares)					629,301	46,837	96,444
Balance at the end of year	0.2		0.2		0.2	0.2	0.1
Balance at the end of year (shares)	16,986,493		16,150,794		16,986,493	16,150,794	16,026,374
Treasury Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at the beginning of year		(16.1)		(9.5)	(16.1)	(9.5)	(3.1)
Balance at the beginning of year (shares)		263,145		172,685	263,145	172,685	74,950
Shares withheld and repurchased related to minimum statutory tax withholding requirements and shares repurchased to net share settlements					(38.5)	(6.6)	(6.4)
Shares withheld and repurchased related to minimum statutory tax withholding requirements and shares repurchased to net share settlements (shares)					469,195	90,460	97,735
Balance at the end of year	(54.6)		(16.1)		(54.6)	(16.1)	(9.5)
Balance at the end of year (shares)	732,340		263,145		732,340	263,145	172,685
Additional Paid-in Capital [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at the beginning of year		203.6		189.1	203.6	189.1	176.9
Exercise of stock options					3.2	1.5	2.5
Warrants exercised					33.2	2.5	5.1
Share-based compensation expense					6.2	10.5	4.6
Excess tax benefit on share- based awards					3.2
Balance at the end of year	249.4		203.6		249.4	203.6	189.1
Accumulated Deficit [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at the beginning of year		(71.5)		(63.2)	(71.5)	(63.2)	(72.7)
Net (loss) earnings					(45.6)	(8.3)	9.5
Balance at the end of year	(117.1)		(71.5)		(117.1)	(71.5)	(63.2)
Accumulated Other Comprehensive Income (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at the beginning of year		(16.3)		(22.3)	(16.3)	(22.3)	(20.8)
Other comprehensive earnings (loss)					(19.4)	6.0	(1.5)
Balance at the end of year	$ (35.7)		$ (16.3)		$ (35.7)	$ (16.3)	$ (22.3)