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Consolidated Statements of Stockholders' Equity - USD ($) | Total | Cumulative Effect, Period of Adoption, Adjustment | Common Stock | Additional Paid-in Capital | Retained Earnings | Retained Earnings Cumulative Effect, Period of Adoption, Adjustment | Treasury Stock
--- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Jul. 31, 2018 |  |  | 38,860,571 |  |  |  |
Beginning balance (in shares) at Jul. 31, 2018 |  |  |  |  |  |  | 15,033,317
Beginning balance at Jul. 31, 2018 | $ 505,684,000 |  | $ 3,886,000 | $ 538,453,000 | $ 405,194,000 |  | $ (441,849,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Equity-classified stock award compensation | $ 11,427,000 |  |  | 11,427,000 |  |  |
Proceeds from exercises of stock options (in shares) | 80,930 |  | 8,100 |  |  |  |
Proceeds from exercises of stock options | $ 216,000 |  | $ 1,000 | 215,000 |  |  |
Proceeds from issuance of employee stock purchase plan shares (in shares) |  |  | 43,316 |  |  |  |
Proceeds from issuance of employee stock purchase plan shares | 926,000 |  | $ 4,000 | 922,000 |  |  |
Issuance of restricted stock (in shares) |  |  | 10,386 |  |  |  |
Issuance of restricted stock | 0 |  | $ 1,000 | (1,000) |  |  |
Net settlement of stock-based awards (in shares) |  |  | 145,119 |  |  |  |
Net settlement of stock-based awards | (3,916,000) |  | $ 15,000 | (3,931,000) |  |  |
Common stock issued for acquisitions (in shares) |  |  | 208,669 |  |  |  |
Common stock issued for acquisitions | 5,606,000 |  | $ 21,000 | 5,585,000 |  |  |
Cash dividends declared, net | (9,575,000) |  |  |  | (9,575,000) |  |
Accrual of dividend equivalents, net of reversal | (327,000) |  |  |  | (327,000) |  |
Net (loss) income | 25,041,000 |  |  |  | 25,041,000 |  |
Ending balance (in shares) at Jul. 31, 2019 |  |  | 39,276,161 |  |  |  |
Ending balance (in shares) at Jul. 31, 2019 |  |  |  |  |  |  | 15,033,317
Ending balance at Jul. 31, 2019 | 535,082,000 |  | $ 3,928,000 | 552,670,000 | 420,333,000 |  | $ (441,849,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Equity-classified stock award compensation | $ 9,275,000 |  |  | 9,275,000 |  |  |
Proceeds from exercises of stock options (in shares) | 285,790 |  | 16,700 |  |  |  |
Proceeds from exercises of stock options | $ 468,000 |  | $ 2,000 | 466,000 |  |  |
Proceeds from issuance of employee stock purchase plan shares (in shares) |  |  | 52,958 |  |  |  |
Proceeds from issuance of employee stock purchase plan shares | 855,000 |  | $ 5,000 | 850,000 |  |  |
Issuance of restricted stock, net of forfeiture (in shares) |  |  | 3,319 |  |  |  |
Issuance of restricted stock, net of forfeiture | 0 |  |  |  |  |  |
Net settlement of stock-based awards (in shares) |  |  | 251,797 |  |  |  |
Net settlement of stock-based awards | (4,888,000) |  | $ 25,000 | (4,913,000) |  |  |
Common stock issued for acquisitions (in shares) |  |  | 323,504 |  |  |  |
Common stock issued for acquisitions | 11,575,000 |  | $ 32,000 | 11,543,000 |  |  |
Cash dividends declared, net | (9,794,000) |  |  |  | (9,794,000) |  |
Accrual of dividend equivalents, net of reversal | (294,000) |  |  |  | (294,000) |  |
Net (loss) income | $ 7,020,000 |  |  |  | 7,020,000 |  |
Ending balance (in shares) at Jul. 31, 2020 | 39,924,439 |  | 39,924,439 |  |  |  |
Ending balance (in shares) at Jul. 31, 2020 | 15,033,317 |  |  |  |  |  | 15,033,317
Ending balance at Jul. 31, 2020 | $ 549,299,000 | $ (215,000) | $ 3,992,000 | 569,891,000 | 417,265,000 | $ (215,000) | $ (441,849,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Accounting Standards Update [Extensible List] |  | Accounting Standards Update 2016-13 [Member] |  |  |  |  |
Equity-classified stock award compensation | 9,983,000 |  |  | 9,983,000 |  |  |
Proceeds from issuance of employee stock purchase plan shares (in shares) |  |  | 54,762 |  |  |  |
Proceeds from issuance of employee stock purchase plan shares | 809,000 |  | $ 5,000 | 804,000 |  |  |
Issuance of restricted stock, net of forfeiture (in shares) |  |  | 35,495 |  |  |  |
Issuance of restricted stock, net of forfeiture | 0 |  | $ 4,000 | (4,000) |  |  |
Net settlement of stock-based awards (in shares) |  |  | 240,549 |  |  |  |
Net settlement of stock-based awards | (4,000,000) |  | $ 24,000 | (4,024,000) |  |  |
Common stock issued for acquisitions (in shares) |  |  | 1,026,567 |  |  |  |
Common stock issued for acquisitions | 28,892,000 |  | $ 103,000 | 28,789,000 |  |  |
Cash dividends declared, net | (10,189,000) |  |  |  | (10,189,000) |  |
Accrual of dividend equivalents, net of reversal | (380,000) |  |  |  | (380,000) |  |
Net (loss) income | $ (73,480,000) |  |  |  | (73,480,000) |  |
Ending balance (in shares) at Jul. 31, 2021 | 41,281,812 |  | 41,281,812 |  |  |  |
Ending balance (in shares) at Jul. 31, 2021 | 15,033,317 |  |  |  |  |  | 15,033,317
Ending balance at Jul. 31, 2021 | $ 500,719,000 |  | $ 4,128,000 | $ 605,439,000 | $ 333,001,000 |  | $ (441,849,000)

X
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