INCOME TAXES - Expected And Reported Income Taxes (Benefit) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Federal statutory income tax rate	35.00%	35.00%	35.00%
Computed tax expense (benefit) at federal statutory rates on income (loss) before income taxes (benefit)	$ 16,357	$ 16,975	$ 8,310
State income tax expense (benefit), net of federal benefit	2,491	3,399	2,274
Federal tax expense associated with non-amortizable assets	0	0	0
Non recognition of expense due to full valuation allowance	0	54	203
Valuation allowance current year activity	0	0	0
Decrease in valuation allowance for change in federal net operating loss carryback rules	0	0	0
Change in uncertain tax positions	0	0	0
Tax benefit shortfall associated with share-based awards	62	997	412
Nondeductible expenses and other	1,001	1,051	1,275
Income taxes (benefit)	19,911	22,476	12,474
Effective income tax rate	42.60%	46.30%	52.50%
Impairment loss	$ 0	$ 850	$ 22,307