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Revenue - Effect on Balance Sheet (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Jul. 01, 2018 | Jun. 30, 2018
--- | --- | --- | ---
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Accounts receivable, net | $ 37,108 |  | $ 33,755
Deferred income tax assets | 4,918 |  | 4,892
Accrued liabilities | 56,054 |  | 49,841
Income taxes payable | 2,218 |  | 2,211
Deferred margin | 0 |  | 1,665
Deferred income tax liabilities | 1,063 |  | 713
Retained earnings | 126,083 |  | $ 122,639
Effect of Change | Accounting Standards Update 2014-09 |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Accounts receivable, net | 224 | $ (200) |
Accrued liabilities | (120) | 100 |
Deferred margin | 1,691 | $ (1,600) |
Deferred income tax liabilities | (285) |  |
Retained earnings | (1,062) |  |
Balances Without Adoption |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Accounts receivable, net | 37,332 |  |
Accrued liabilities | 55,934 |  |
Deferred margin | 1,691 |  |
Deferred income tax liabilities | 778 |  |
Retained earnings | $ 125,021 |  |

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- Definition Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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