ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 1) - USD ($) $ in Thousands |
Jun. 30, 2018 |
Dec. 31, 2017 |
Jun. 30, 2017 |
---|---|---|---|
Contract assets: | |||
Unbilled receivables | $ 7,226 | $ 4,850 | $ 7,521 |
Contract liabilities: | |||
Customer advances and unearned income | 4,681 | 3,372 | 3,414 |
Unearned event income | $ 4,100 | $ 4,117 | $ 1,370 |