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Consolidated Statement Of Stockholders' Equity - USD ($) $ in Thousands | Taskforce [Member] Common Stock [Member] | Taskforce [Member] Additional Paid-in Capital [Member] | Taskforce [Member] | Accretive [Member] Common Stock [Member] | Accretive [Member] Additional Paid-in Capital [Member] | Accretive [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Treasury Stock [Member] | Accumulated Other Comprehensive (Loss) Income [Member] | Retained Earnings [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balances at May. 28, 2016 |  |  |  |  |  |  | $ 582 | $ 388,763 | $ (363,856) | $ (10,794) | $ 327,954 | $ 342,649
Balances (in shares) at May. 28, 2016 |  |  |  |  |  |  | 58,237,000 |  | 22,008,000 |  |  |
Exercise of stock options |  |  |  |  |  |  | $ 3 | 3,853 |  |  |  | 3,856
Exercise of stock options (in shares) |  |  |  |  |  |  | 305,000 |  |  |  |  |
Stock-based compensation expense |  |  |  |  |  |  |  | 6,068 |  |  |  | 6,068
Tax shortfall from stock-based compensation arrangements |  |  |  |  |  |  |  | (4,344) |  |  |  | (4,344)
Issuance of common stock under Employee Stock Purchase Plan |  |  |  |  |  |  | $ 4 | 4,489 |  |  |  | 4,493
Issuance of common stock under Employee Stock Purchase Plan (in shares) |  |  |  |  |  |  | 359,000 |  |  |  |  |
Issuance of restricted stock |  |  |  |  |  |  | $ 1 | (1) |  |  |  |
Issuance of restricted stock (in shares) |  |  |  |  |  |  | 92,000 |  |  |  |  |
Issuance of restricted stock out of treasury stock to board of director members |  |  |  |  |  |  |  |  | $ 838 |  | (838) |
Issuance of restricted stock out of treasury stock to board of director members (in shares) |  |  |  |  |  |  |  |  | (36,000) |  |  |
Forfeitures of restricted stock (in shares) |  |  |  |  |  |  | (1,000) |  |  |  |  |
Purchase of shares |  |  |  |  |  |  |  |  | $ (118,886) |  |  | (118,886)
Purchase of shares (in shares) |  |  |  |  |  |  |  |  | 7,358,000 |  |  |
Cash dividends declared |  |  |  |  |  |  |  |  |  |  | (13,743) | (13,743)
Currency translation adjustment |  |  |  |  |  |  |  |  |  | (602) |  | (602)
Net income |  |  |  |  |  |  |  |  |  |  | 18,651 | 18,651
Balances at May. 27, 2017 |  |  |  |  |  |  | $ 590 | 398,828 | $ (481,904) | (11,396) | 332,024 | 238,142
Balances (in shares) at May. 27, 2017 |  |  |  |  |  |  | 58,992,000 |  | 29,330,000 |  |  |
Exercise of stock options |  |  |  |  |  |  | $ 6 | 6,483 |  |  |  | 6,489
Exercise of stock options (in shares) |  |  |  |  |  |  | 517,000 |  |  |  |  |
Stock-based compensation expense |  |  |  |  |  |  |  | 5,978 |  |  |  | 5,978
Issuance of common stock under Employee Stock Purchase Plan |  |  |  |  |  |  | $ 3 | 3,947 |  |  |  | 3,950
Issuance of common stock under Employee Stock Purchase Plan (in shares) |  |  |  |  |  |  | 339,000 |  |  |  |  |
Issuance of restricted stock |  |  |  |  |  |  | $ 1 | (1) |  |  |  |
Issuance of restricted stock (in shares) |  |  |  |  |  |  | 105,000 |  |  |  |  |
Issuance of restricted stock out of treasury stock to board of director members |  |  |  |  |  |  |  |  | $ 298 |  | (298) |
Issuance of restricted stock out of treasury stock to board of director members (in shares) |  |  |  |  |  |  |  |  | (13,000) |  |  |
Purchase of shares |  |  |  |  |  |  |  |  | $ (5,116) |  |  | (5,116)
Purchase of shares (in shares) |  |  |  |  |  |  |  |  | 321,000 |  |  |
Issuance of common stock for acquisition of businesses | $ 2 | $ 2,600 | $ 2,602 | $ 11 | $ 11,743 | $ 11,754 |  |  |  |  |  |
Issuance of common stock for acquisition of businesses (in shares) | 227,000 |  |  | 1,072,000 |  |  |  |  |  |  |  |
Cash dividends declared |  |  |  |  |  |  |  |  |  |  | (14,811) | (14,811)
Currency translation adjustment |  |  |  |  |  |  |  |  |  | 1,011 |  | 1,011
Net income |  |  |  |  |  |  |  |  |  |  | 18,826 | 18,826
Balances at May. 26, 2018 |  |  |  |  |  |  | $ 613 | 429,578 | $ (486,722) | (10,385) | 335,741 | $ 268,825
Balances (in shares) at May. 26, 2018 |  |  |  |  |  |  | 61,252,000 |  | 29,638,000 |  |  | 31,614,000
Exercise of stock options |  |  |  |  |  |  | $ 15 | 19,794 |  |  |  | $ 19,809
Exercise of stock options (in shares) |  |  |  |  |  |  | 1,444,000 |  |  |  |  | 1,444,000
Stock-based compensation expense |  |  |  |  |  |  |  | 6,358 |  |  |  | $ 6,358
Issuance of common stock under Employee Stock Purchase Plan |  |  |  |  |  |  | $ 3 | 4,496 |  |  |  | 4,499
Issuance of common stock under Employee Stock Purchase Plan (in shares) |  |  |  |  |  |  | 358,000 |  |  |  |  |
Issuance of restricted stock out of treasury stock to board of director members |  |  |  |  |  |  |  |  | $ 510 |  | (510) |
Issuance of restricted stock out of treasury stock to board of director members (in shares) |  |  |  |  |  |  |  |  | (21,000) |  |  |
Purchase of shares |  |  |  |  |  |  |  |  | $ (29,891) |  |  | (29,891)
Purchase of shares (in shares) |  |  |  |  |  |  |  |  | 1,849,000 |  |  |
Cash dividends declared |  |  |  |  |  |  |  |  |  |  | (16,471) | (16,471)
Currency translation adjustment |  |  |  |  |  |  |  |  |  | (2,203) |  | (2,203)
Net income |  |  |  |  |  |  |  |  |  |  | 31,470 | 31,470
Balances at May. 25, 2019 |  |  |  |  |  |  | $ 631 | $ 460,226 | $ (516,103) | $ (12,588) | $ 350,230 | $ 282,396
Balances (in shares) at May. 25, 2019 |  |  |  |  |  |  | 63,054,000 |  | 31,466,000 |  |  | 31,588,000

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