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Interim Consolidated Financial Statements - Summary of Effect of Adopting ASC 606 In Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Accounts receivable, net | $ 49,486 | $ 70,023
Deferred commissions | 12,514 | 13,731
Prepaid expenses and other current assets | 12,789 | 18,942
Total current assets | 217,876 | 236,819
Other assets | 7,756 | 6,231
Total assets | 326,142 | 345,200
Deferred revenue | 143,023 | 145,207
Total current liabilities | 177,937 | 195,053
Total liabilities | 186,031 | 204,011
Retained earnings | 125,698 | 123,010
Total stockholders’ equity | 140,111 | 141,189
Total liabilities and stockholders’ equity | 326,142 | $ 345,200
ASC 606 [Member] | Amounts as if Previous Guidance in Effect [Member] |  |
Accounts receivable, net | 53,040 |
Deferred commissions | 11,734 |
Prepaid expenses and other current assets | 17,573 |
Total current assets | 225,434 |
Other assets | 7,194 |
Total assets | 333,138 |
Deferred revenue | 152,033 |
Total current liabilities | 186,947 |
Total liabilities | 195,041 |
Retained earnings | 123,684 |
Total stockholders’ equity | 138,097 |
Total liabilities and stockholders’ equity | $ 333,138 |

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