ACQUISITIONS Pro Forma Impact of Acquisitions (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Business Acquisition [Line Items]
Interest Income (Expense), Net	$ 28,197	$ 26,067	$ 25,542
Amortization of Intangible Assets	6,671	3,957	3,376
Income Tax Expense (Benefit)	2,538	(4,439)	435
All Current Acquirees
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue	949,679	893,814	589,333
Business Acquisition, Pro Forma Net Income (Loss)	(55,444)	(23,352)	(2,582)
Business Acquisition, Pro Forma Earnings Per Share, Basic	$ (0.86)	$ (0.42)	$ (0.05)
Business Acquisition, Pro Forma Earnings Per Share, Diluted	$ (0.86)	$ (0.42)	$ (0.05)
Interest Income (Expense), Net	3,734	8,613	1,169
Amortization of Intangible Assets	576	4,094	400
Income Tax Expense (Benefit)	$ 2,785	$ 4,357	$ (1,159)