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Condensed Consolidated Statement of Shareholders' Equity (unaudited) - 6 months ended Jun. 30, 2018 - USD ($) $ in Thousands | CRA International, Inc. Shareholders' Equity | Common Stock | Retained Earnings | Accumulated Other Comprehensive Loss | Noncontrolling Interest | Total
--- | --- | --- | --- | --- | --- | ---
BALANCE at Dec. 30, 2017 | $ 206,908 | $ 47,414 | $ 169,390 | $ (9,896) | $ 321 | $ 207,229
BALANCE (in shares) at Dec. 30, 2017 |  | 8,297,172 |  |  |  | 8,297,172
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |
Net income | 11,725 |  | 11,725 |  |  | $ 11,725
Foreign currency translation adjustment | (1,285) |  |  | (1,285) |  | (1,285)
Cumulative effect of a change in accounting principle related to ASC 606, net of tax | 366 |  | 366 |  |  | 366
Exercise of stock options | 916 | $ 916 |  |  |  | 916
Exercise of stock options (in shares) |  | 44,083 |  |  |  |
Share-based compensation expense | 2,438 | $ 2,438 |  |  |  | 2,438
Restricted share vestings (in shares) |  | 98,235 |  |  |  |
Redemption of vested employee restricted shares for tax withholding | (1,783) | $ (1,783) |  |  |  | (1,783)
Redemption of vested employee restricted shares for tax withholding (in shares) |  | (35,287) |  |  |  |
Shares repurchased | (20,121) | $ (20,121) |  |  |  | $ (20,121)
Shares repurchased (in shares) |  | (378,477) |  |  |  | (378,477)
Accrued dividends on unvested shares | (34) |  | (34) |  |  | $ (34)
Cash paid on dividend equivalents | (98) |  | (98) |  |  | (98)
Cash dividends paid to shareholders | (2,795) |  | (2,795) |  |  | (2,795)
BALANCE at Jun. 30, 2018 | $ 196,237 | $ 28,864 | $ 178,554 | $ (11,181) | $ 321 | $ 196,558
BALANCE (in shares) at Jun. 30, 2018 |  | 8,025,726 |  |  |  | 8,025,726

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