INCOME TAXES (Details 2) (USD $)	3 Months Ended	12 Months Ended
	Jun. 30, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
INCOME TAXES
Income taxes paid, net of refunds received		$ 13,542,000	$ 539,000	$ 27,121,000
Reconciliation of statutory federal income tax rate to the effective income tax rate
Federal statutory tax rate (as a percent)		35.00%	35.00%	35.00%
Increase (decrease) in the tax rate resulting from:
State taxes, net of federal effect (as a percent)		3.00%	2.10%	3.80%
Effect of tax rates of other countries (as a percent)		(2.20%)	(0.70%)	(1.60%)
Foreign Tax Credit-Amended Returns (as a percent)			(6.90%)
Section 199 deduction (as a percent)		(1.70%)	(0.40%)	(0.70%)
Other (as a percent)		0.60%	2.30%	1.20%
Effective tax rate (as a percent)		34.70%	31.40%	37.70%
Benefit realized, including interest due and net of taxes, as a result of the filing of amended Federal Income Tax Returns in order to claim Foreign Tax Credits	2,800,000
Foreign earnings that are expected to be reinvested indefinitely		105,200,000
Unrecognized tax benefits, which would reduce the effective tax rate if recognized		2,000,000
Summarizes the activity related to unrecognized tax benefits
Balance, beginning of the year		1,953,000	1,821,000	1,673,000
Additions for tax positions related to the current year		189,000	112,000	106,000
Additions for tax positions related to the prior year			69,000	79,000
Decreases for tax positions related to the prior year			(46,000)
Settlements with taxing authorities			(47,000)	(17,000)
Lapse of statute of limitations		(137,000)	(119,000)	(120,000)
Change in exchange rate		39,000	163,000	100,000
Balance, end of the year		2,044,000	1,953,000	1,821,000
Income tax penalties and interest
Interest and penalties, net of deferred taxes		100,000	100,000	100,000
Accrued payment of interest and penalties		700,000	600,000
Foreign
Operating loss carryforwards
Net operating loss carryforwards		38,893,000
Increase in valuation allowance to recognize the benefits associated with net operating loss carry forwards		219,000
Decrease in the valuation allownace related to foreign exchange		$ 143,000
Foreign | Low end of range
Operating loss carryforwards
Period for net operating loss carryforwards to be carried forward (in years)		five years