Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE OF FINANCIAL INSTRUMENTS (Details)

v2.4.0.8
FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Line of Credit [Member]
   
Short-term Debt [Line Items]    
Line of credit maximum borrowing capacity $ 175,000  
Outstanding borrowings 0 0
Letter of Credit [Member]
   
Short-term Debt [Line Items]    
Line of credit maximum borrowing capacity 75,000  
Swingline Credit Facility [Member]
   
Short-term Debt [Line Items]    
Line of credit maximum borrowing capacity $ 25,000