DERIVATIVE FINANCIAL INSTRUMENTS (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Accumulated other comprehensive income - unrealized loss on valuation of swap agreements	$ (1,600,000)	$ 1,100,000
Other Liabilities | Level 2
Derivatives, Fair Value [Line Items]
Derivative financial instruments, liabilities	2,600,000	2,000,000
Prepaid Expenses and Other Assets | Level 2
Derivatives, Fair Value [Line Items]
Derivative financial instruments, assets	1,100,000	3,100,000
Cash Flow Hedging | Variable-Rate Derivatives | Minimum
Derivatives, Fair Value [Line Items]
Derivative, cap interest rate	3.00%
Cash Flow Hedging | Variable-Rate Derivatives | Maximum
Derivatives, Fair Value [Line Items]
Derivative, cap interest rate	4.25%
Interest Rate Swap | Cash Flow Hedging | Fixed-Rate Derivatives
Derivatives, Fair Value [Line Items]
Number of interest rate swaps (in interest rate swaps)	12
Notional amount of interest rate cash flow hedge derivatives	191,500,000
Interest Rate Swap | Cash Flow Hedging | Fixed-Rate Derivatives | Minimum
Derivatives, Fair Value [Line Items]
Derivative, fixed interest rate	0.70%
Interest Rate Swap | Cash Flow Hedging | Fixed-Rate Derivatives | Maximum
Derivatives, Fair Value [Line Items]
Derivative, fixed interest rate	3.77%
Interest Rate Swap | Cash Flow Hedging | Variable-Rate Derivatives
Derivatives, Fair Value [Line Items]
Notional amount of interest rate cash flow hedge derivatives	$ 139,900,000
Derivative, number of instruments held	4