Equity-Based Compensation Plans (Details Textual) (USD $)	0 Months Ended	12 Months Ended					12 Months Ended			9 Months Ended	12 Months Ended									12 Months Ended			12 Months Ended		9 Months Ended	12 Months Ended						9 Months Ended	12 Months Ended
	May 09, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	May 10, 2012	Jan. 03, 2010	Dec. 31, 2013 2004 Plan [Member]	Dec. 31, 2013 Stock option grants in 2011 and 2012 [Member]	Dec. 31, 2013 Stock option grants in 2006 through 2010 [Member]	Sep. 30, 2013 Performance Cash Award 2013 [Member]	Dec. 31, 2013 Employee Stock Option Market vesting feature [Member]	Dec. 31, 2013 Stock Options [Member]	Dec. 31, 2012 Stock Options [Member]	Dec. 31, 2013 Performance Shares [Member]	Dec. 31, 2012 Performance Shares [Member]	Dec. 31, 2013 Performance Cash Award [Member]	Dec. 31, 2012 Performance Cash Award [Member]	Dec. 31, 2013 Restricted Stock Units R S U [Member]	Dec. 31, 2012 Restricted Stock Units R S U [Member]	Dec. 31, 2013 Restricted Stock [Member]	Dec. 31, 2012 Restricted Stock [Member]	Dec. 31, 2011 Restricted Stock [Member]	Dec. 31, 2013 Maximum [Member]	Dec. 31, 2012 Maximum [Member]	Sep. 30, 2013 Maximum [Member] Performance Cash Award 2013 [Member]	Dec. 31, 2013 Maximum [Member] Performance Cash Award 2013 [Member]	Dec. 31, 2013 Maximum [Member] Employee Stock Option Market vesting feature [Member]	Dec. 31, 2013 Maximum [Member] Performance Shares [Member]	Dec. 31, 2013 Maximum [Member] Restricted Stock Units R S U [Member]	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2012 Minimum [Member]	Sep. 30, 2013 Minimum [Member] Performance Cash Award 2013 [Member]	Dec. 31, 2013 Minimum [Member] Employee Stock Option Market vesting feature [Member]	Dec. 31, 2013 Minimum [Member] Restricted Stock Units R S U [Member]	Dec. 31, 2013 Selling General and Administrative Expenses [Member]	Dec. 31, 2012 Selling General and Administrative Expenses [Member]	Dec. 31, 2011 Selling General and Administrative Expenses [Member]	Dec. 31, 2013 Annual Vesting [Member] Stock Options [Member] Stock option grants in 2011 and 2012 [Member]	Dec. 31, 2013 Clif Vesting after Second Year [Member] Stock Options [Member] Stock option grants in 2006 through 2010 [Member]	Dec. 31, 2013 Annual Vesting Years Three and Four [Member] Stock Options [Member] Stock option grants in 2006 through 2010 [Member]	Dec. 31, 2013 Market Vesting Feature Stock Price Threshold 1 [Member] Employee Stock Option Market vesting feature [Member]	Dec. 31, 2013 Market Vesting Feature Stock Price Threshold 2 [Member] Employee Stock Option Market vesting feature [Member]	Dec. 31, 2013 Market Vesting Feature Stock Price Threshold 3 [Member] Employee Stock Option Market vesting feature [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Number of Options, Granted		642,700									375,000
Share-based compensation arrangement by award type, market condition target																																									$ 14	$ 16	$ 18
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage																																						33.33%	50.00%	25.00%
Weighted Average Exercise Price, Granted		$ 10.74
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 6.02	$ 4.32	$ 3.46																							$ 5.87						$ 5.22
Equity-Based Compensation Plans (Textual) [Abstract]
Authorization of additional shares under ESPP		7,800,000			1,800,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	1,600,000
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee							500,000
Share-based Compensation Arrangement by Share-based Payment Award Maximum		7 years				10 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant							1,850,597
Equity-based compensation expense		$ 8,210,000	$ 7,645,000	$ 7,548,000																															$ 8,200,000	$ 7,600,000	$ 7,500,000
Non-cash compensation expense				400,000
Intrinsic value of options		600,000	300,000	1,900,000
Unrecognized compensation expense		3,400,000	2,500,000
Stock option vesting period								3 years	4 years																			3 years	5 years					3 years
Share-based Compensation Arrangement by Award Type, Performance Cash Award, Expense																2,200,000	1,300,000
Number of Options, Exercised		(97,455)
Compensation expense recognized over a weighted-average period												1 year 5 months	1 year 4 months		1 year	1 year 7 months	2 years			2 years	2 years 6 months
Fair Value of Vested Options		4,000,000	4,700,000
Performance awards target achievement range																									240.00%	240.00%						0.00%
Intrinsic Value of restricted stock awards																				7,885,314	3,700,000	2,500,000
Unrecognized compensation cost total														0	1,500,000	3,300,000	2,600,000	4,900,000	4,300,000
Increasing in aggregate number of shares of common stock available for issuance					350,000
Number of shares of common stock available for issuance		650,000
Deferred Compensation Arrangement with Individual, Common Stock Reserved for Future Issuance		206,837
Stock & Deferred Compensation Plan for Non-Employee		67,696
Weighted-average fair value		$ 11.29
Approximate cash payment to each non-employee for insufficient deferred stock units		28,100
Share units outstanding under the plan		332,776
Employee Stock Purchase Plan, Annual FMV Limit		$ 25,000
Employee Stock Purchase Plan, Annual Compensation Limit Percentage		10.00%
Offering Period of Employee Stock Purchase Plan		3 months
ESPP under which the offering purchase price of shares		85.00%
Aggregate Share Available, Employee Stock Purchase Plans		2,067,483
Stock issued under ESPP		269,156	403,292	407,091
Discount on company issued common stock under its ESPP		15.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate				60.00%							67.00%												79.00%	65.00%						76.00%	64.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate				0.91%							0.60%												0.54%	0.95%						0.29%	0.77%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate		0.00%	0.00%	0.00%							0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights								three-year period	four-year period
Requisite Service Period										3 years				3 years