FAIR VALUE OF FINANCIAL INSTRUMENTS - Financial Assets and Liabilities that Are Measured at Fair Value on Recurring Basis (Detail) (USD $) | Mar. 31, 2015 | Dec. 31, 2014 |
In Thousands, unless otherwise specified |
Marketable equity securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale investments | $27,160 | $40,950 |
Fair Value, Measurements, Recurring | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total assets | 27,910 | 41,700 |
Interest rate swap liability | 615 | 244 |
Total liabilities | -615 | -244 |
Fair Value, Measurements, Recurring | Level 1 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total assets | 27,160 | 40,950 |
Interest rate swap liability | 0 | 0 |
Total liabilities | 0 | 0 |
Fair Value, Measurements, Recurring | Level 2 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total assets | 0 | 0 |
Interest rate swap liability | 615 | 244 |
Total liabilities | -615 | -244 |
Fair Value, Measurements, Recurring | Level 3 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total assets | 750 | 750 |
Interest rate swap liability | 0 | 0 |
Total liabilities | 0 | 0 |
Fair Value, Measurements, Recurring | Marketable equity securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale investments | 27,160 | 40,950 |
Fair Value, Measurements, Recurring | Marketable equity securities | Level 1 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale investments | 27,160 | 40,950 |
Fair Value, Measurements, Recurring | Marketable equity securities | Level 2 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale investments | 0 | 0 |
Fair Value, Measurements, Recurring | Marketable equity securities | Level 3 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale investments | 0 | 0 |
Fair Value, Measurements, Recurring | MDP Accelerator portfolio | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities | 750 | 750 |
Fair Value, Measurements, Recurring | MDP Accelerator portfolio | Level 1 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities | 0 | 0 |
Fair Value, Measurements, Recurring | MDP Accelerator portfolio | Level 2 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities | 0 | 0 |
Fair Value, Measurements, Recurring | MDP Accelerator portfolio | Level 3 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Available-for-sale investments | | 750 |
Debt securities | $750 | $750 |