LONG-TERM EQUITY-BASED COMPENSATION PROGRAM (Details) (USD $)	9 Months Ended	0 Months Ended					3 Months Ended		9 Months Ended			12 Months Ended		3 Months Ended	9 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended
	Sep. 30, 2012	Mar. 15, 2012 Options/SARs [Member]	May 02, 2011 Options/SARs [Member]	Mar. 02, 2011 Options/SARs [Member]	May 03, 2010 Options/SARs [Member]	Mar. 03, 2010 Options/SARs [Member]	Sep. 30, 2012 Options/SARs [Member]	Sep. 30, 2011 Options/SARs [Member]	Sep. 30, 2012 Options/SARs [Member]	Sep. 30, 2011 Options/SARs [Member]	Sep. 30, 2012 2006 Omnibus Plan [Member]	Dec. 31, 2011 2006 Omnibus Plan [Member]	Dec. 31, 2009 2006 Omnibus Plan [Member]	Mar. 31, 2011 2011 Long-Term Equity-Based Compensation Program [Member]	Sep. 30, 2012 2011 Long-Term Equity-Based Compensation Program [Member]	Dec. 31, 2011 2011 Long-Term Equity-Based Compensation Program [Member]	Dec. 31, 2011 2011 Long-Term Equity-Based Compensation Program [Member] Non-management Directors [Member]	Mar. 31, 2011 2011 Long-Term Equity-Based Compensation Program [Member] Options/SARs [Member]	Dec. 31, 2011 2011 Long-Term Equity-Based Compensation Program [Member] Options/SARs [Member] Non-management Directors [Member]	Mar. 31, 2012 2012 Long-Term Equity-Based Compensation Program [Member]	Sep. 30, 2012 2012 Long-Term Equity-Based Compensation Program [Member]	Mar. 31, 2012 2012 Long-Term Equity-Based Compensation Program [Member] Options/SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reverse stock split before amendment													one-for-five
Stock split after amendment												two-for-one
Class A common stock reserved for issuance (in shares)											1,600,000
Share based compensation award maximum number of shares per employee (in shares)											80,000						10,000
Maximum aggregate paying amount of cash and other property other than shares per employee											$ 2,000,000
Proportion of options/SARs become exercisable on first anniversary of the approval date											one-third				one-third						one-third
Proportion of options/SARs become exercisable on second anniversary of the approval date											one-third				one-third						one-third
Proportion of options/SARs become exercisable on third anniversary of the approval date											one-third				one-third						one-third
Vested award options annually incremental exercise price expire period from approval date											5 years
Aggregate maximum number of options/SARs granted to all participants (in shares)																		170,500	70,000			198,000
Exercise price of options/SARs granted to all participants (in dollars per share)									$ 17.01	$ 18.34				$ 18.69			$ 17.49				$ 17.01
Proportion of options/SARs grants become exercisable														One-fifth						One-fifth
Proportion of remaining options/SARs become exercisable																				four fifths
Number of non-management directors																7
Options / SARs
Outstanding at beginning of period (in shares)									564,666	531,168
Granted (in shares)									198,000	240,500
Exercised (in shares)									0	(35,670)
Expired (in shares)									0	(122,500)
Forfeited (in shares)									(121,000)	(37,332)
Outstanding at end of period (in shares)							641,666	576,166	641,666	576,166
Options exercisable at September 30 (in shares)							321,020	189,032	321,020	189,032
Weighted average fair value of options (in dollars per share)		$ 7.08	$ 8.87	$ 9.69	$ 8.99	$ 8.74			$ 7.55	$ 7.78
Aggregate intrinsic value of options							0	0	0	0
Weighted average contractual term									2 years 10 months 24 days	3 years 6 months
Weighted Average Exercise Price
Outstanding at beginning of period (in dollars per share)									$ 14.91	$ 13.06
Granted (in dollars per share)									$ 17.01	$ 18.34				$ 18.69			$ 17.49				$ 17.01
Exercised (in dollars per share)									$ 0	$ 8.22
Expired (in dollars per share)									$ 0	$ 15.86
Forfeited (in dollars per share)									$ 16.16	$ 14.09
Outstanding at end of period (in dollars per share)							$ 15.33	$ 14.90	$ 15.33	$ 14.90
Options exercisable at September 30 (in dollars per share)							$ 13.24	$ 12.15	$ 13.24	$ 12.15
Shares [Abstract]
Nonvested at December 31, 2011 (in shares)	377,648
Granted (in shares)	198,000
Vested (in shares)	(176,337)
Expired or cancelled (in shares)	0
Forfeited (in shares)	(78,665)
Nonvested at September 30, 2012 (in shares)	320,646
Weighted Average Grant Date Fair Value [Abstract]
Nonvested at December 31, 2011 (in dollars per share)	$ 8.56
Granted (in dollars per share)	$ 7.08
Vested (in dollars per share)	$ 7.69
Expired or cancelled (in dollars per share)	$ 0
Forfeited (in dollars per share)	$ 8.17
Nonvested at September 30, 2012 (in dollars per share)	$ 8.22
Risk free rate equal to U.S. Treasury yield	5 years
Forfeiture rate of options/SARs awarded (in hundredths)	0.00%
Fair value of options/SARs estimated at date of grant using weighted average assumptions [Abstract]
Expected life from grant date		5 years	5 years	5 years	5 years	5 years
Risk-free interest rate (in hundredths)		1.11%	1.88%	2.21%	2.13%	2.33%
Volatility (in hundredths)		55.52%	57.68%	58.63%	62.60%	63.70%
Dividend yield (in hundredths)		2.40%	0.00%	0.00%	0.00%	0.00%
Weighted average fair value (in dollars per share)		$ 7.08	$ 8.87	$ 9.69	$ 8.99	$ 8.74			$ 7.55	$ 7.78
Compensation expense related to options/SARs							182,045	393,050	541,491	672,870
Unrecognized compensation cost related to options/SARs							$ 2,000,000	$ 2,900,000	$ 2,000,000	$ 2,900,000
Weighted average period over cost expected to recognized									3 years