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Common Stock Repurchase Program (Detail) - Common Stock [Member] - USD ($) | Sep. 05, 2019 | Jan. 27, 2019 | Jun. 15, 2016
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Common Stock Repurchase Program June 15, 2016 [Member] |  |  |
Stockholders Equity Note [Line Items] |  |  |
Authorization amount for repurchase of common stock |  |  | $ 5,000,000
Remaining authorized repurchase amount |  | $ 1,700,000 |
Stock Repurchase Program September 5, 2019 [Member] | Subsequent Event [Member] |  |  |
Stockholders Equity Note [Line Items] |  |  |
Authorization amount for repurchase of common stock | $ 5,000,000 |  |

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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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