Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Provisions for depreciation      
Depreciation $ 16,627us-gaap_Depreciation $ 14,415us-gaap_Depreciation $ 15,212us-gaap_Depreciation
Building [Member] | Minimum [Member]      
Property, Plant and Equipment [Line Items]      
Useful lives of the assets 10 years    
Building [Member] | Maximum [Member]      
Property, Plant and Equipment [Line Items]      
Useful lives of the assets 40 years    
Furniture Fixtures and Operating Equipment [Member] | Minimum [Member]      
Property, Plant and Equipment [Line Items]      
Useful lives of the assets 2 years    
Furniture Fixtures and Operating Equipment [Member] | Maximum [Member]      
Property, Plant and Equipment [Line Items]      
Useful lives of the assets 10 years