FAIR VALUE MEASUREMENTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Interest rate swap
Assets and liabilities measured and recorded at fair value on a recurring basis
Variable rate basis	1 month LIBOR
Recurring Basis | Carrying Value
Assets and liabilities measured and recorded at fair value on a recurring basis
Acquisition-related contingent consideration	1,165	$ 1,116
Total Liabilities	4,751	3,567
Recurring Basis | Carrying Value | Interest rate cap
Assets and liabilities measured and recorded at fair value on a recurring basis
Interest rate cap		1
Recurring Basis | Carrying Value | Interest rate swap
Assets and liabilities measured and recorded at fair value on a recurring basis
Interest rate swap	3,586	2,451
Recurring Basis | Significant Other Observable Inputs (Level 2)
Assets and liabilities measured and recorded at fair value on a recurring basis
Total Liabilities	3,586	2,451
Recurring Basis | Significant Other Observable Inputs (Level 2) | Interest rate cap
Assets and liabilities measured and recorded at fair value on a recurring basis
Interest rate cap		1
Recurring Basis | Significant Other Observable Inputs (Level 2) | Interest rate swap
Assets and liabilities measured and recorded at fair value on a recurring basis
Interest rate swap	3,586	2,451
Recurring Basis | Significant Unobservable Inputs (Level 3)
Assets and liabilities measured and recorded at fair value on a recurring basis
Acquisition-related contingent consideration	1,165	1,116
Total Liabilities	1,165	$ 1,116