Organization and Summary of Significant Accounting Policies (Fair Value of Financial Statements) (Details) - London Interbank Offered Rate (LIBOR)	12 Months Ended
Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate spread over variable rate	100.00%
Third Amended Credit Agreement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate spread over variable rate	100.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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