CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands |
Dec. 31, 2018 |
Sep. 30, 2018 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Allowance for doubtful accounts receivable, current | $ 6,430 | $ 4,285 |
| Common stock, shares authorized | 100,000,000 | 100,000,000 |
| Common stock, shares outstanding | 63,717,000 | 64,371,000 |
| Common stock, shares issued | 63,717,000 | 64,371,000 |
| X | ||||||||||
- Definition A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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