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FAIR VALUE MEASUREMENTS (Business Acquisition) (Details) | Sep. 30, 2019 USD ($) | Feb. 11, 2019 USD ($) | Sep. 30, 2018 USD ($) | Dec. 31, 2017 USD ($)
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Shiel Holdings LLC (Shiel) |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Maximum Contingent Consideration Payment |  |  |  | $ 15,000,000
Shiel Holdings LLC (Shiel) | Comparable Company Revenue Volatility |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Measurement input |  |  |  | 0.069
Shiel Holdings LLC (Shiel) | Discount rate |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Measurement input |  |  |  | 0.045
Shiel Holdings LLC (Shiel) | Fair Value, Inputs, Level 3 |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Fair Value of Contingent Consideration | $ 7,000,000 |  |  |
ReproSource, Inc. in September 2018 |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Maximum Contingent Consideration Payment |  |  | $ 10,000,000 |
ReproSource, Inc. in September 2018 | Comparable Company Revenue Volatility |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Measurement input |  |  | 0.085 |
ReproSource, Inc. in September 2018 | Discount rate |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Measurement input |  |  | 0.065 |
ReproSource, Inc. in September 2018 | Fair Value, Inputs, Level 3 |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Fair Value of Contingent Consideration | 0 |  |  |
Boyce & Bynum |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Maximum Contingent Consideration Payment |  | $ 25,000,000 |  |
Boyce & Bynum | Comparable Company Revenue Volatility |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Measurement input |  | 0.080 |  |
Boyce & Bynum | Discount rate |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Measurement input |  | 0.072 |  |
Boyce & Bynum | Fair Value, Inputs, Level 3 |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Fair Value of Contingent Consideration | $ 0 | $ 6,000,000 |  |

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