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Note 3 - Revenue From Contracts With Customers - Contract Assets and Liabilities (Details)
$ in Thousands
 3 Months Ended
Sep. 30, 2018
USD ($)
Accounts receivable, balance $ 5,655
Accounts receivable, additions 5,422
Accounts receivable, deductions 9,525
Accounts receivable, balance 1,552
Unbilled services, balance 5,904
Unbilled services, additions 2,960
Unbilled services, deductions 1,681
Unbilled services, balance 7,183
Balance 2,552
Customer deposits, additions
Customer deposits, deductions 503
Balance 2,049
Amounts included in the contract liability balance at the beginning of the period $ 503