Stock-Based Compensation - Narrative (Details) $ in Millions				1 Months Ended	3 Months Ended
	Mar. 31, 2016 USD ($) employee shares	Mar. 30, 2015 employee shares	Jun. 19, 2012 executive_officer shares	Jun. 30, 2012 USD ($)	Mar. 31, 2016 USD ($) employee compensation_plan shares		Mar. 31, 2015 USD ($) employee shares
Stock-Based Compensation (Textual) [Abstract]
Number of stock-based compensation plans | compensation_plan					2
Selling, general and administrative expenses | $					$ 0.8		$ 1.1
Unrecognized stock-based compensation expense related to stock options | $	$ 5.0				$ 5.0
Weighted-average period for recognizing stock compensation expense					2 years
2008 Equity Incentive Plan [Member]
Stock-Based Compensation (Textual) [Abstract]
Stock options expiration period					7 years
Stock options award vesting right					vest in equal annual increments over the vesting period
Number of options granted (shares) | shares					0
Employee Group [Member] | 2008 Equity Incentive Plan [Member]
Stock-Based Compensation (Textual) [Abstract]
Stock options vesting period					3 years
Directors [Member] | 2008 Equity Incentive Plan [Member]
Stock-Based Compensation (Textual) [Abstract]
Stock options vesting period					1 year
Restricted Stock and Restricted Stock Units [Member] | 2008 Equity Incentive Plan [Member]
Stock-Based Compensation (Textual) [Abstract]
Stock options award vesting right					vest in equal annual increments over the vesting period
Restricted Stock and Restricted Stock Units [Member] | Employee Group [Member]
Stock-Based Compensation (Textual) [Abstract]
Stock options vesting period					3 years
Restricted Stock and Restricted Stock Units [Member] | Employee Group [Member] | 2008 Equity Incentive Plan [Member]
Stock-Based Compensation (Textual) [Abstract]
Stock options vesting period					2 years	[1]	2 years	[2]
Restricted Stock and Restricted Stock Units [Member] | Directors [Member]
Stock-Based Compensation (Textual) [Abstract]
Stock options vesting period					1 year
Restricted Stock and Restricted Stock Units [Member] | Executive Officers [Member] | 2008 Equity Incentive Plan [Member]
Stock-Based Compensation (Textual) [Abstract]
Number of employees | employee	5				5		8
Restricted Stock and Restricted Stock Units [Member] | Executive Officers [Member] | Inducement Award [Member]
Stock-Based Compensation (Textual) [Abstract]
Number of employees | employee							2
Restricted Stock and Restricted Stock Units [Member] | Senior Business Leader [Member] | 2008 Equity Incentive Plan [Member]
Stock-Based Compensation (Textual) [Abstract]
Number of employees | employee	3				3
Performance Shares [Member] | 2008 Equity Incentive Plan [Member]
Stock-Based Compensation (Textual) [Abstract]
Total of performance units were outstanding (shares) | shares	609,000	1,325,000			609,000
Percentage of performance units in equity (percent)	43.00%	50.00%
Percentage of performance units in cash (percent)	57.00%	50.00%
Performance period		2 years
Performance Shares [Member] | 2008 Equity Incentive Plan [Member] | Threshold performance level [Member]
Stock-Based Compensation (Textual) [Abstract]
Performance level percentage	35.00%	35.00%
Performance Shares [Member] | 2008 Equity Incentive Plan [Member] | Target performance level [Member]
Stock-Based Compensation (Textual) [Abstract]
Performance level percentage	100.00%	100.00%
Performance Shares [Member] | 2008 Equity Incentive Plan [Member] | Maximum performance level [Member]
Stock-Based Compensation (Textual) [Abstract]
Performance level percentage	150.00%	200.00%
Performance Shares [Member] | 2006 Management Incentive Plan [Member]
Stock-Based Compensation (Textual) [Abstract]
Stock options vesting period				3 years
Total of performance units were outstanding (shares) | shares			154,264
Grant date fair value awards | $				$ 1.2
Percentage of performance units in equity (percent)			60.00%
Percentage of performance units in cash (percent)			40.00%
Performance units settled in period (shares) | shares							6,200
Common stock issued during period (shares) | shares							3,720
Cash payments for shares settled during period | $							$ 0.1
Performance Shares [Member] | Executive Officers [Member] | 2008 Equity Incentive Plan [Member]
Stock-Based Compensation (Textual) [Abstract]
Number of employees | employee	5	5			5
Performance Shares [Member] | Executive Officers [Member] | 2006 Management Incentive Plan [Member]
Stock-Based Compensation (Textual) [Abstract]
Number of employees | executive_officer			7
Performance Shares [Member] | Senior Business Leader [Member] | 2008 Equity Incentive Plan [Member]
Stock-Based Compensation (Textual) [Abstract]
Number of employees | employee	3				3

[1] The Company granted nonvested performance-based stock awards (restricted stock units) in the first quarter of 2016 to five executive officers and three other senior business leaders.

[2] The Company granted nonvested performance-based stock awards (restricted stock units) in the first quarter of 2015 to eight executive officers.