DERIVATIVE FINANCIAL INSTRUMENTS (Terms of Interest Swaps and Caps) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	May 31, 2012	Aug. 31, 2014
Swap 1
Derivative [Line Items]
Notional Amount	$ 25,000,000
Effective Start Date	Oct. 01, 2014
Maturity Date	Aug. 31, 2017
Pay Fixed Rate	1.1973%
Swap 1 | 1-Month LIBOR
Derivative [Line Items]
Variable rate spread (as a percentage)	0.10%
Swap 2
Derivative [Line Items]
Notional Amount	25,000,000
Effective Start Date	Oct. 16, 2014
Maturity Date	Aug. 16, 2018
Pay Fixed Rate	1.5963%
Swap 2 | 1-Month LIBOR
Derivative [Line Items]
Variable rate spread (as a percentage)	0.13%
Swap 3
Derivative [Line Items]
Notional Amount	25,000,000
Effective Start Date	Feb. 05, 2016
Maturity Date	Feb. 05, 2021
Pay Fixed Rate	2.703%
Swap 4
Derivative [Line Items]
Notional Amount	50,000,000
Effective Start Date	Aug. 05, 2016
Maturity Date	Aug. 05, 2021
Pay Fixed Rate	2.882%
Swap 5
Derivative [Line Items]
Notional Amount	25,000,000
Effective Start Date	Oct. 05, 2017
Maturity Date	Oct. 05, 2027
Pay Fixed Rate	2.54%
Swap 6
Derivative [Line Items]
Notional Amount	25,000,000
Effective Start Date	Mar. 05, 2018
Maturity Date	Mar. 05, 2028
Pay Fixed Rate	2.576%
Interest Rate Swap
Derivative [Line Items]
Notional Amount	175,000,000
Terminated Swap 1
Derivative [Line Items]
Notional Amount	25,000,000
Original Effective Start Date	Apr. 06, 2015
Original Maturity Date	Apr. 05, 2020
Date Terminated	Mar. 27, 2015
Termination Fee Paid	123,000
Terminated Swap 2
Derivative [Line Items]
Notional Amount	25,000,000
Original Effective Start Date	May 05, 2015
Original Maturity Date	May 05, 2020
Date Terminated	Mar. 27, 2015
Termination Fee Paid	122,000
Terminated Swap 3
Derivative [Line Items]
Notional Amount	25,000,000
Original Effective Start Date	Jun. 05, 2015
Original Maturity Date	Jun. 05, 2020
Date Terminated	Mar. 27, 2015
Termination Fee Paid	121,000
Terminated Swap 4
Derivative [Line Items]
Notional Amount	25,000,000
Original Effective Start Date	Aug. 05, 2015
Original Maturity Date	Aug. 05, 2020
Date Terminated	Mar. 27, 2015
Termination Fee Paid	921,000
Terminated Interest Rate Swap
Derivative [Line Items]
Notional Amount	100,000,000
Termination Fee Paid	1,288,000
Cap 1
Derivative [Line Items]
Notional Amount	7,500,000	7,500,000
Effective Start Date	Jul. 01, 2012
Maturity Date	Jul. 01, 2017
Strike Rate	0.47%
Cap 1 | 3-Month LIBOR
Derivative [Line Items]
Variable rate spread (as a percentage)	4.00%
Cap 2
Derivative [Line Items]
Notional Amount	8,000,000	8,000,000
Effective Start Date	Jul. 07, 2012
Maturity Date	Jul. 07, 2017
Strike Rate	0.47%
Cap 2 | 3-Month LIBOR
Derivative [Line Items]
Variable rate spread (as a percentage)	3.10%
Cap 3
Derivative [Line Items]
Notional Amount	25,000,000		25,000,000
Effective Start Date	Sep. 15, 2014
Maturity Date	Sep. 15, 2019
Strike Rate	1.82%
Cap 3 | 3-Month LIBOR
Derivative [Line Items]
Variable rate spread (as a percentage)	1.32%
Cap 4
Derivative [Line Items]
Notional Amount	10,000,000		10,000,000
Effective Start Date	Sep. 30, 2014
Maturity Date	Sep. 30, 2019
Strike Rate	1.85%
Cap 4 | 3-Month LIBOR
Derivative [Line Items]
Variable rate spread (as a percentage)	2.80%
Interest Rate Cap
Derivative [Line Items]
Notional Amount	$ 50,500,000