ACQUISITIONS Allocation of Total Purchase Price Paid for Acquisitions (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended			0 Months Ended		3 Months Ended	0 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Oct. 02, 2012 Poole and Associates, Inc.	Oct. 12, 2012 Sensage, Inc	Dec. 31, 2012 Rsignia, Inc. and Dilijent solutions, LLC	Jan. 31, 2013 IDEAL Technology Corporation
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Cash and Equivalents				$ 4,412	$ 1,948	$ (6)	$ 301
Current Assets, Net of Cash Acquired				7,278	8,995	801	894
Fixed Assets				755	61	123	70
Intangibles				21,709	8,498	6,001	2,056
Goodwill	297,484		290,861	110,928	9,630	5,837	6,623
Other Assets				29	54	0	0
Total Assets Acquired				145,111	29,186	12,756	9,944
Current Liabilities				8,045	6,700	1,333	865
Long-term Obligations				9,140	0	0	0
Total Liabilities Assumed				17,185	6,700	1,333	865
Net Assets Acquired				127,926	22,486	11,423	9,079
Net Cash Paid	6,751	0		113,545	11,246	6,601	6,751
Equity Issued				9,969	9,292	4,828	2,027
Actual Cash Paid				$ 117,957	$ 13,194	$ 6,595	$ 7,052