FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2015	Dec. 31, 2014
FAIR VALUE MEASUREMENTS
Municipal bonds and money market funds	$ 509	$ 20,173
Gearing
FAIR VALUE MEASUREMENTS
Impairment to identifiable intangible assets	0
Services
FAIR VALUE MEASUREMENTS
Impairment to identifiable intangible assets	0
Level 2
FAIR VALUE MEASUREMENTS
Total assets at fair value		11,429
Level 3
FAIR VALUE MEASUREMENTS
Total assets at fair value	2,077	1,298
Total
FAIR VALUE MEASUREMENTS
Total assets at fair value	2,077	12,727
Recurring \| Level 2 \| Municipal bonds and money market funds
FAIR VALUE MEASUREMENTS
Municipal bonds and money market funds		11,429
Recurring \| Total \| Municipal bonds and money market funds
FAIR VALUE MEASUREMENTS
Municipal bonds and money market funds		11,429
Nonrecurring \| Level 3 \| Gearing
FAIR VALUE MEASUREMENTS
Property plant and equipment at fair value	817
Nonrecurring \| Level 3 \| Clintonville Facility
FAIR VALUE MEASUREMENTS
Property plant and equipment at fair value	700	738
Nonrecurring \| Level 3 \| Cicero Avenue \| Gearing
FAIR VALUE MEASUREMENTS
Property plant and equipment at fair value	560	560
Nonrecurring \| Total \| Gearing
FAIR VALUE MEASUREMENTS
Property plant and equipment at fair value	817
Nonrecurring \| Total \| Clintonville Facility
FAIR VALUE MEASUREMENTS
Property plant and equipment at fair value	700	738
Nonrecurring \| Total \| Cicero Avenue \| Gearing
FAIR VALUE MEASUREMENTS
Property plant and equipment at fair value	$ 560	$ 560

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Fair value portion of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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