ACQUISITIONS Acquisition and Integration Costs (Details) (All current acquirees, Other Acquisition and Integration Expenses, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
All current acquirees | Other Acquisition and Integration Expenses
Business Combination, Separately Recognized Transactions [Line Items]
Legal, financial advisory and professional fees	$ 975	$ 1,010
Employee costs including redundant salaries and benefits and severance	1,150	1,135
Facilities consolidation and discontinuation	305	159
Bad debt expense related to acquired accounts receivable	3,302	0
Legal settlement	325	2,300
Other	442	19
Total	$ 6,499	$ 4,623