INCOME TAXES Income tax expense (benefit) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Current:
Federal	$ 15,616,000	$ (3,419,000)	$ 9,256,000
State	7,303,000	5,941,000	6,861,000
Foreign	4,004,000	3,866,000	2,190,000
Current Income Tax Expense (Benefit)	26,923,000	6,388,000	18,307,000
Deferred:
Federal	2,962,000	5,814,000	1,910,000
State	(484,000)	3,163,000	1,994,000
Foreign	217,000	(1,245,000)	(947,000)
Deferred Income Tax Expense (Benefit)	2,695,000	7,732,000	2,957,000
Income tax expense	29,618,000	14,120,000	21,264,000
Income tax expense (benefit) attributable to discontinued operations	0	(9,032,000)	4,008,000
Income tax expense (benefit) attributable to stock option grants and restricted stock awards	$ (1,100,000)	$ 1,400,000	$ 500,000