SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2018
USD ($)
ر.س / $
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Dec. 31, 2017
USD ($)
|
Dec. 31, 2016
USD ($)
account
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| Accounting Policies [Abstract] | |||
| Increase in allowance for doubtful accounts | $ 152,000 | $ 0 | $ 90,000 |
| Receivable write-offs | $ 0 | $ 0 | $ 93,000 |
| Number of accounts written off | account | 1 | ||
| Imputed interest rates on outstanding notes | 4.00% | 4.00% | |
| Notes receivable allowance | $ 0 | $ 0 | |
| Employer percent of match | 100.00% | ||
| Employer percent match of gross pay | 6.00% | ||
| Vesting period under 401(k) plan | 2 years | ||
| Matching contributions on behalf of employees | $ 1,502,000 | 1,412,000 | $ 1,195,000 |
| Reduction in depreciation expense due to amortization of capitalize liability | $ 787,000 | $ 840,000 | $ 1,047,000 |
| Foreign exchange rate (SR per USD) | ر.س / $ | 3.75 | ||
| Undiscounted future minimum operating lease payments not recognized under current standard | $ 18,131,000 | ||
| X | ||||||||||
- Definition The reduction in depreciation expense due to amortization of capitalize liability. No definition available.
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- Definition Number Of Accounts Written Off No definition available.
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- References No definition available.
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- Definition Amount of increase (decrease) in the allowance for doubtful accounts. No definition available.
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- Definition Amount of direct write-downs of accounts receivable charged against the allowance. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of contributions made by employer into fund established for purposes of making future disbursement to individual in accordance with deferred compensation arrangement. No definition available.
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- Definition Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. No definition available.
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- Definition Percentage employer matches of the employee's percentage contribution matched. No definition available.
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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Yield on the receivable, on which interest has been imputed, as calculated from its issuance value or purchase price. The calculated effective interest rate considers factors such as the issued face value or price paid for the receivable, the time period between payments, and the time until maturity [full receipt] of the receivable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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