Stock-Based Compensation (Details Textual) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended	7 Months Ended	12 Months Ended			1 Months Ended		12 Months Ended						7 Months Ended	12 Months Ended			1 Months Ended	7 Months Ended	12 Months Ended					12 Months Ended		5 Months Ended	12 Months Ended			12 Months Ended
	Jul. 31, 2010	Dec. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Convertible Preferred Stock [Member]	May 31, 2010 Restricted Stock [Member]	May 31, 2010 Restricted Stock [Member] Related Party [Member]	Dec. 31, 2012 Restricted Stock [Member] Related Party [Member]	Dec. 31, 2012 7% Restricted Preferred Stock [Member]	Dec. 31, 2012 Stock Options [Member]	Dec. 31, 2012 Stock Options [Member] Maximum [Member]	Dec. 31, 2012 Stock Options [Member] Minimum [Member]	Dec. 31, 2012 Stock Options [Member] Related Party [Member]	Dec. 31, 2010 Restricted Stock and Units [Member]	Dec. 31, 2012 Restricted Stock and Units [Member]	Dec. 31, 2011 Restricted Stock and Units [Member]	Dec. 31, 2010 Restricted Stock and Units [Member]	Jul. 31, 2010 Restricted Preferred Stock [Member]	Dec. 31, 2010 Restricted Preferred Stock [Member]	Dec. 31, 2012 Restricted Preferred Stock [Member]	Dec. 31, 2011 Restricted Preferred Stock [Member]	Dec. 31, 2010 Restricted Preferred Stock [Member]	Jul. 19, 2010 Restricted Preferred Stock [Member]	Dec. 31, 2011 Restricted Preferred Stock [Member] Convertible Preferred Stock [Member]	Dec. 31, 2012 Successor [Member] Stock Options [Member]	May 27, 2010 Management [Member]	May 31, 2010 Management Incentive Plan and Omnibus Incentive Plan [Member] Predecessor [Member]	Dec. 31, 2010 Management Incentive Plan [Member] Restricted Stock and Units [Member]	Dec. 31, 2012 Management Incentive Plan [Member] Successor [Member] Restricted Stock [Member]	May 27, 2010 Management Incentive Plan [Member] Successor [Member] Restricted Stock [Member]	Dec. 31, 2010 Management Incentive Plan [Member] Successor [Member] Stock Options [Member]	Dec. 31, 2010 Omnibus Plan [Member] Restricted Stock and Units [Member]	Dec. 31, 2010 Omnibus Plan [Member] Successor [Member]
Stock-Based Compensation (Textual) [Abstract]
Allocated Share-based compensation expense			$ 4,097	$ 3,198											$ 8,245	$ 7,062				$ 1,471	$ 1,573						$ 244
Percentage of restricted common stock granted																													4.00%
Restricted common stock granted										702,509																			757,896	757,896
Additional restricted common stock granted										78,057																			104,075
Percentage of restricted 7% preferred stock granted									4.00%
Restricted preferred stock convert into common stock		77,758	42,888	83,507																67,074
Percentage of stock options granted										3.00%
Restricted common stock issued to directors and Oak Hill Advisors L.P. or its affiliates							26,448	26,448					58,386												780,566
Common stock reserved																										780,566
Common stock issuable under convertible preferred stock									178,771												116,207
Options, Granted			385,600			41,664											861,971					41,664						26,448			58,386	167,872	532,600
Stock option awards grant term											10 years	7 years
Stock option grants vest period first			3 years												3 years
Stock option grants vest period second			4 years												4 years
Stock option grants vest period three			5 years
Weighted-average grant date fair value of stock options granted		$ 11.42	$ 19.45	$ 20.53
Intrinsic value of stock options exercised			1,326	599
Options exercised		0	106,255
Unrecognized compensation expenses restricted shares of common stock															8,997					1,122
Recognized weighted average period			3 years												1 year 5 months					1 year 1 month 6 days
Stock dividend paid	10,780																	435
Cumulative participating convertible preferred stock, dividend rate percentage			7.00%	7.00%	7.00%															7.00%
Outstanding shares		1,052,444	958,333	1,003,108																15,632				27,083
Restricted preferred stock shares outstanding															536,224	648,113				15,632	27,083		41,664
Restricted common shares and units vested														0	218,811				0	11,451
Restricted preferred stock shares granted															115,732					0	0
Total fair value of restricted common shares and units vested															5,734	5,960				1,463	1,576
Stock Based Compensation (Additional Textual) [Abstract]
Total aggregate intrinsic value			$ 38.00
Unrecognized compensation expenses for stock options			$ 10,339