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SUBSEQUENT EVENTS - Additional Information (Details) (USD $)
0 Months Ended 0 Months Ended
Aug. 07, 2012
Revolving Credit Facility [Member]
Aug. 07, 2012
Letter of Credit [Member]
Aug. 07, 2012
Swingline Loan [Member]
May 05, 2014
Subsequent Event [Member]
Credit Agreement [Member]
Revolving Credit Facility [Member]
May 05, 2014
Subsequent Event [Member]
Credit Agreement [Member]
Revolving Credit Facility [Member]
Minimum [Member]
May 05, 2014
Subsequent Event [Member]
Credit Agreement [Member]
Revolving Credit Facility [Member]
Maximum [Member]
May 05, 2014
Subsequent Event [Member]
Credit Agreement [Member]
Revolving Credit Facility [Member]
Base Rate [Member]
Minimum [Member]
May 05, 2014
Subsequent Event [Member]
Credit Agreement [Member]
Revolving Credit Facility [Member]
Base Rate [Member]
Maximum [Member]
May 05, 2014
Subsequent Event [Member]
Credit Agreement [Member]
Revolving Credit Facility [Member]
LIBOR
May 05, 2014
Subsequent Event [Member]
Credit Agreement [Member]
Revolving Credit Facility [Member]
LIBOR
Minimum [Member]
May 05, 2014
Subsequent Event [Member]
Credit Agreement [Member]
Revolving Credit Facility [Member]
LIBOR
Maximum [Member]
May 05, 2014
Subsequent Event [Member]
Credit Agreement [Member]
Revolving Credit Facility [Member]
Federal Fund Rate [Member]
May 05, 2014
Subsequent Event [Member]
Credit Agreement [Member]
Revolving Credit Facility [Member]
Applicable Interest Rate [Member]
May 05, 2014
Subsequent Event [Member]
Credit Agreement [Member]
Revolving Credit Facility [Member]
United States
May 05, 2014
Subsequent Event [Member]
Credit Agreement [Member]
Letter of Credit [Member]
May 05, 2014
Subsequent Event [Member]
Credit Agreement [Member]
Swingline Loan [Member]
May 05, 2014
Subsequent Event [Member]
Credit Agreement [Member]
Swingline Loan [Member]
Base Rate [Member]
Minimum [Member]
May 05, 2014
Subsequent Event [Member]
Credit Agreement [Member]
Swingline Loan [Member]
Base Rate [Member]
Maximum [Member]
Subsequent Event [Line Items]                                    
Line of credit facility, maximum borrowing capacity $ 50,000,000.0 $ 5,000,000.0 $ 5,000,000.0 $ 150,000,000                   $ 110,000,000 $ 5,000,000 $ 15,000,000    
Line of credit facility, option, additional maximum borrowing capacity       50,000,000                            
Line of credit facility, outstanding       $ 72,300,000                            
Debt basis spread on variable rate             0.25% 1.00%   1.25% 2.00%           0.25% 1.00%
Line of credit facility, base rate                 1.00%     0.50%            
Line of credit facility, default rate                         2.00%          
Line of credit facility, unused capacity, commitment fee percentage         0.20% 0.35%