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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Parent | Common Stock | Additional Paid-In Capital | Retained Earnings | Accumulated Other Comprehensive Loss | Non-controlling Interest | Total
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Apr. 30, 2018 | $ 409,033 | $ 2 | $ 170,139 | $ 238,913 | $ (21) | $ 23 |
Balance (in shares) at Apr. 30, 2018 |  | 23,908,736 |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Apr. 30, 2018 |  |  |  |  |  |  | $ 409,056
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income (loss) | 41,756 |  |  | 41,756 |  | (40) | 41,716
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest |  |  |  |  |  |  | 41,716
Unrealized gain on investments | 57 |  |  |  | 57 |  | 57
Foreign currency translation | (32) |  |  |  | (32) |  | (32)
Stock options exercised | 71 |  | 71 |  |  |  | 71
Stock options exercised (in shares) |  | 12,725 |  |  |  |  |
Restricted stock awards (in shares) |  | 39,823 |  |  |  |  |
Restricted stock awards forfeited (in shares) |  | (15,100) |  |  |  |  |
Tax withholding payment related to net share settlement of equity awards | (1,033) |  | (1,033) |  |  |  | (1,033)
Tax withholding payment related to net share settlement of equity awards (in shares) |  | (13,724) |  |  |  |  |
Stock-based compensation | 5,714 |  | 5,714 |  |  |  | 5,714
Balance at Jan. 26, 2019 | 455,566 | $ 2 | 174,891 | 280,669 | 4 | (17) |
Balance (in shares) at Jan. 26, 2019 |  | 23,932,460 |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Jan. 26, 2019 |  |  |  |  |  |  | 455,549
Balance at Oct. 27, 2018 | 444,174 | $ 2 | 171,867 | 272,300 | 5 | 2 | 444,176
Balance (in shares) at Oct. 27, 2018 |  | 23,928,373 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income (loss) | 8,369 |  |  | 8,369 |  | (19) | 8,350
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest |  |  |  |  |  |  | 8,350
Foreign currency translation | (1) |  |  |  | (1) |  | (1)
Restricted stock awards (in shares) |  | 5,377 |  |  |  |  |
Restricted stock awards forfeited (in shares) |  | (445) |  |  |  |  |
Tax withholding payment related to net share settlement of equity awards | (58) |  | (58) |  |  |  | (58)
Tax withholding payment related to net share settlement of equity awards (in shares) |  | (845) |  |  |  |  |
Stock-based compensation | 3,082 |  | 3,082 |  |  |  | 3,082
Balance at Jan. 26, 2019 | 455,566 | $ 2 | 174,891 | 280,669 | 4 | (17) |
Balance (in shares) at Jan. 26, 2019 |  | 23,932,460 |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Jan. 26, 2019 |  |  |  |  |  |  | 455,549
Balance at Apr. 30, 2019 | 462,571 | $ 2 | 176,216 | 286,351 | 2 | 4 | 462,571
Balance (in shares) at Apr. 30, 2019 |  | 23,946,293 |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Apr. 30, 2019 |  |  |  |  |  |  | 462,575
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income (loss) | 23,603 |  |  | 23,603 |  | (27) | 23,576
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest |  |  |  |  |  |  | 23,576
Foreign currency translation | 67 |  |  |  | 67 |  | 67
Stock options exercised | 93 |  | 93 |  |  |  | 93
Stock options exercised (in shares) |  | 3,000 |  |  |  |  |
Restricted stock awards (in shares) |  | 74,892 |  |  |  |  |
Restricted stock awards forfeited (in shares) |  | (11,769) |  |  |  |  |
Tax withholding payment related to net share settlement of equity awards | (1,009) |  | (1,009) |  |  |  | (1,009)
Tax withholding payment related to net share settlement of equity awards (in shares) |  | (17,307) |  |  |  |  |
Stock-based compensation | 4,751 |  | 4,751 |  |  |  | 4,751
Balance at Jan. 25, 2020 | 490,741 | $ 2 | 180,051 | 310,619 | 69 | (23) | 490,741
Balance (in shares) at Jan. 25, 2020 |  | 23,995,109 |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Jan. 25, 2020 |  |  |  |  |  |  | 490,718
Balance at Oct. 26, 2019 | 490,360 | $ 2 | 178,550 | 311,627 | 181 | (3) |
Balance (in shares) at Oct. 26, 2019 |  | 23,990,616 |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Oct. 26, 2019 |  |  |  |  |  |  | 490,357
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income (loss) | (1,008) |  |  | (1,008) |  | (20) | (1,028)
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest |  |  |  |  |  |  | (1,028)
Foreign currency translation | (112) |  |  |  | (112) |  | (112)
Restricted stock awards (in shares) |  | 9,200 |  |  |  |  |
Restricted stock awards forfeited (in shares) |  | (764) |  |  |  |  |
Tax withholding payment related to net share settlement of equity awards | (266) |  | (266) |  |  |  | (266)
Tax withholding payment related to net share settlement of equity awards (in shares) |  | (3,943) |  |  |  |  |
Stock-based compensation | 1,767 |  | 1,767 |  |  |  | 1,767
Balance at Jan. 25, 2020 | 490,741 | $ 2 | $ 180,051 | 310,619 | $ 69 | $ (23) | 490,741
Balance (in shares) at Jan. 25, 2020 |  | 23,995,109 |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Jan. 25, 2020 |  |  |  |  |  |  | 490,718
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Adoption of ASU | ASU 2018-09 | $ 665 |  |  | $ 665 |  |  | $ 665

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