DISPOSITION (Details) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Aug. 04, 2015
Disposal Group Information
Goodwill impairment charges				$ 6,700,000
Balance Sheet Disclosure
Total assets held for sale	$ 78,775,000			78,775,000
Total liabilities held for sale	20,240,000			20,240,000
Allstate | Disposal Group, Held-for-sale, Not Discontinued Operations
Disposal Group Information
Amount to be received subject to adjustments for working capital and capital expenditures						$ 58,000,000
Goodwill impairment charges				6,400,000
Income Statement Disclosure
Income before income taxes	1,700,000		$ 265,000	(5,700,000)	$ 301,000
Balance Sheet Disclosure
Receivables, net	22,340,000			22,340,000
Prepaid expenses and other current assets	1,555,000			1,555,000
Property and equipment, net	19,484,000			19,484,000
Intangible assets, net	21,824,000			21,824,000
Goodwill	13,572,000			13,572,000
Total assets held for sale	78,775,000			78,775,000
Accounts payable	6,108,000			6,108,000
Accrued liabilities	1,616,000			1,616,000
Accrued salaries and benefits	568,000			568,000
Deferred income taxes	11,948,000			11,948,000
Total liabilities held for sale	$ 20,240,000			20,240,000
Field & Industrial Services
Disposal Group Information
Goodwill impairment charges		$ 6,700,000		$ 6,700,000
Goodwill impairment charge per diluted share		$ 0.31