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LONG-TERM DEBT (Details - Interest Expense and Amortization of Debt Issuance Costs) (USD $)
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3 Months Ended | |||
|---|---|---|---|---|
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Mar. 31, 2015
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Mar. 31, 2014
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Apr. 01, 2014
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Dec. 31, 2014
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| Debt Instrument [Line Items] | ||||
| Line of credit facility, amount outstanding | $ 150,000,000 | |||
| Interest expense, debt | 2,343,000 | 1,615,000 | ||
| Amortization of debt issuance costs | 827,000 | 710,000 | ||
| Interest paid | 1,518,000 | 905,000 | ||
| Revolving Credit Facility [Member] | ||||
| Debt Instrument [Line Items] | ||||
| Line of credit facility, amount outstanding | $ 0 | $ 0 | ||