Employee And Non-Employee Benefit And Compensation Plans - Additional Information (Details) (USD $)	12 Months Ended								12 Months Ended							0 Months Ended	12 Months Ended																						12 Months Ended								12 Months Ended			12 Months Ended																		12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010	Dec. 31, 2007	Dec. 31, 2006	Jan. 23, 2007	Dec. 31, 2012 Charles A. Koppelman	Dec. 31, 2011 Charles A. Koppelman	Dec. 31, 2012 Stock Options [Member]	Dec. 31, 2011 Stock Options [Member]	Dec. 31, 2012 Service period-based options	Dec. 31, 2012 Service period-based RSUs	Dec. 31, 2011 Service period-based RSUs	May 23, 2012 Service period-based RSUs Charles A. Koppelman	Dec. 31, 2011 Service period-based RSUs Charles A. Koppelman	Dec. 31, 2012 Performance-based RSUs		Dec. 31, 2011 Performance-based RSUs		Dec. 31, 2010 Performance-based RSUs		Dec. 31, 2009 Performance-based RSUs	Dec. 31, 2011 Performance-based RSUs Charles A. Koppelman	Dec. 31, 2012 Price-based RSUs	Dec. 31, 2011 Price-based RSUs	Dec. 31, 2012 Price-based RSUs Charles A. Koppelman	Dec. 31, 2011 Price-based RSUs Charles A. Koppelman	Dec. 31, 2011 Price-based RSUs $6 exercise price	Dec. 31, 2011 Price-based RSUs $6 exercise price Charles A. Koppelman	Dec. 31, 2011 Price-based RSUs $8 exercise price	Dec. 31, 2011 Price-based RSUs $8 exercise price Charles A. Koppelman	Dec. 31, 2011 Price-based RSUs $10 exercise price	Dec. 31, 2011 Price-based RSUs $12 exercise price	Dec. 31, 2011 Price-based RSUs $14 exercise price	Apr. 30, 2008 1999 Plan	Apr. 30, 2008 Non-Employee Director Plan	Dec. 31, 2011 Prior Plans	Dec. 31, 2010 Prior Plans	Dec. 31, 2011 Prior Plans Service period-based restricted stock	Dec. 31, 2012 Stock Plan	Dec. 31, 2011 Stock Plan	Dec. 31, 2010 Stock Plan	Dec. 31, 2008 Stock Plan	May 01, 2008 Stock Plan	Dec. 31, 2012 Stock Plan Service period-based options	Dec. 31, 2011 Stock Plan Service period-based options	Dec. 31, 2010 Stock Plan Service period-based options	Dec. 31, 2012 Stock Plan Service period-based options New Management Team Hires	Dec. 31, 2011 Stock Plan Service period-based options New Management Team Hires	Dec. 31, 2012 Stock Plan Price-based options	Dec. 31, 2011 Stock Plan Price-based options	Dec. 31, 2012 Stock Plan Price-based options $6 exercise price	Dec. 31, 2011 Stock Plan Price-based options $6 exercise price	Dec. 31, 2012 Stock Plan Price-based options $8 exercise price	Dec. 31, 2011 Stock Plan Price-based options $8 exercise price	Dec. 31, 2012 Stock Plan Price-based options $10 exercise price	Dec. 31, 2011 Stock Plan Price-based options $10 exercise price	Dec. 31, 2012 Stock Plan Price-based options $12 exercise price	Dec. 31, 2011 Stock Plan Price-based options $12 exercise price	Dec. 31, 2012 Stock Plan Service period-based restricted stock	Dec. 31, 2011 Stock Plan Service period-based restricted stock	Dec. 31, 2010 Stock Plan Service period-based restricted stock	Dec. 31, 2012 Stock Plan Service period-based RSUs	Dec. 31, 2011 Stock Plan Service period-based RSUs	Dec. 31, 2010 Stock Plan Service period-based RSUs	Dec. 31, 2012 Stock Plan Price-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum employee contribution	25.00%
Employer mathcing contribution percent of match	50.00%
Employer matching contribution, percent	6.00%
Employer-matching contributions vesting period	4 years
Employer-matching contributions	$ 800,000		$ 600,000		$ 800,000
Number of shares authorized for grant awards																																					10,000,000	600,000
Shares available for issuance																																										5,941,120				10,000,000
Increase in shares available for issuance																																													4,557,000
Non-cash equity compensation	3,807,000	[1]	5,496,000	[1]	5,401,000				2,500					300,000												600,000		100,000	40,000																					200,000		500,000
Maximum term of stock options	10 years
Vesting period													1 year
Total fair value of shares vested																																							900,000	1,500,000		900,000	2,500,000	2,200,000
Total fair value of shares vested																		200,000		600,000																				500,000	200,000																					100,000	500,000	1,200,000	400,000
Option Expense	1,600,000		2,400,000		3,300,000
Unrecognized compensation cost related to stock awards											1,300,000	2,700,000		300,000												100,000																								200,000		100,000										0			700,000			100,000
Restricted Stock or Unit Expense	2,200,000		3,100,000		2,100,000
Weighted average recognition period of unrecognized compensation cost											2 years 4 months 24 days			2 years 8 months 19 days																																				2 years 8 months 19 days																		1 year 3 months 18 days
Intrinsic value of options exercised											100,000	2,100,000
Proceeds received from stock option exercises	153,000		1,712,000		295,000						200,000	1,700,000
Options granted																																										505,000	2,565,559	870,002			505,000	1,740,559			550,000		825,000		206,250		206,250		206,250		206,250
Number of options vesting annually																																																		183,333
Exercise price of option granted																														$ 6	$ 6	$ 8	$ 8	$ 10	$ 12	$ 14																		$ 6		$ 8		$ 10		$ 12
Advisory fee									10,000
Cash compensation									7,500
Weighted-average grant date fair values of nonvested shares																		600,000		1,000,000																																													2,700,000	2,200,000		1,700,000
Exercise price							$ 12.59
Nonvested shares																		140,500		208,500		720,000																									0	8,352	320,922																719,726	539,698	0	440,000
Nonvested shares, weighted average grant date fair value																		$ 4.62	[2]	$ 4.62	[2]	$ 4.62	[2]																								$ 0.00	$ 4.49	$ 8.24																$ 3.74	$ 4.14	$ 0.00	$ 3.89
Shares granted															350,000	15,151	15,151					550,000		351,625			440,000		100,000	50,000	50,000	110,000	50,000	110,000	110,000												25,202	33,037																	302,163	639,698
Shares to be forfeited if not already vested at termination of employment agreement																									200,000
Cash severance payments										1,500,000
Shares forfeited																15,151		17,500		341,500					200,000																							217,510																	2,500	87,500
Value of shares granted																	$ 50,000
Number of RSUs to vest															116,667																					60,000
Warrants issued to non-employees							833,333
Vested shares acquired by non-employees						154,112
Vested shares forfeited by non-employees						262,555
Share Price								$ 19.98

[1] As disclosed on the Company's consolidated statements of cash flows, total non-cash equity compensation expense was $3.9 million and $5.0 million in 2012 and 2011, respectively. Included in non-cash equity compensation expense in 2012 and 2011 were net charges to expense of approximately $0.1 million and reversals of expense of approximately $0.5 million, respectively, which were generated in connection with restructuring activities. Accordingly, these amounts are reflected as restructuring charges in the Company's 2012 and 2011 consolidated statements of operations. See Note 14, Restructuring charges for further information.

[2] The weighted average grant date value included in the table above was adjusted to reflect the impact of the modifications approved on December 3, 2010 to the 2010 and 2009 awards.