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Stockholders' Equity (Details) - USD ($) |  |  | 1 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 08, 2017 | Oct. 06, 2016 | Jun. 30, 2016 | Jan. 31, 2017 | Jan. 31, 2016 | Mar. 07, 2017 | Dec. 07, 2016
Class of Stock [Line Items] |  |  |  |  |  |  |
Number of common stock sold in public offering (in shares) |  |  | 7,145,000 |  |  |  |
Price per share (in dollars per share) |  |  | $ 14.00 |  |  |  |
Proceeds from sale of common stock |  |  | $ 95,029,000 |  |  |  |
Aggregate registered amount available for sale of securities under shelf registration statement |  |  |  | $ 74,970,000 |  |  |
Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract] |  |  |  |  |  |  |
Stock repurchase program, remaining authorized repurchase amount |  |  |  | 8,664,000 |  |  |
Maximum amount authorized by the Board of Directors for repurchases of the Company's common stock |  |  |  | $ 100,000,000 |  |  |
Repurchases of common stock (in shares) |  |  |  | 0 | 0 |  |
Dividends [Abstract] |  |  |  |  |  |  |
Quarterly dividend payment amount per share (in dollars per share) |  | $ 0.30 |  |  |  |  | $ 0.10
Dividends, cash paid (in dollars per share) |  | $ 0.30 |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Aggregate registered amount available for sale of securities under shelf registration statement | $ 74,970,000 |  |  |  |  |  |
Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract] |  |  |  |  |  |  |
Stock repurchase program, remaining authorized repurchase amount | $ 8,664,000 |  |  |  |  |  |
Dividends [Abstract] |  |  |  |  |  |  |
Quarterly dividend payment amount per share (in dollars per share) |  |  |  |  |  | $ 0.10 |
Targeted quarterly dividend amount per common share for the fourth quarter of fiscal 2017 (in dollars per share) | $ 0.10 |  |  |  |  |  |

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