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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands | CRA International, Inc. Shareholders' Equity | Common Stock | Retained Earnings | Accumulated Other Comprehensive Income (Loss) | Noncontrolling Interest | Total
--- | --- | --- | --- | --- | --- | ---
BALANCE at Jan. 03, 2015 | $ 214,085 | $ 73,171 | $ 147,618 | $ (6,704) | $ 619 | $ 214,704
BALANCE (in shares) at Jan. 03, 2015 |  | 9,228,272 |  |  |  |
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |
Net income (loss) | 7,657 |  | 7,657 |  | (1,332) | 6,325
Foreign currency translation adjustment | (2,546) |  |  | (2,546) |  | (2,546)
Issuance of common stock | 42 | $ 42 |  |  |  | 42
Issuance of common stock (in shares) |  | 1,359 |  |  |  |
Exercise of stock options | 602 | $ 602 |  |  |  | $ 602
Exercise of stock options (in shares) |  | 29,288 |  |  |  | 29,288
Share-based compensation expense for employees | 5,755 | $ 5,755 |  |  |  | $ 5,755
Restricted shares vesting (in shares) |  | 106,504 |  |  |  |
Redemption of vested employee restricted shares for tax withholding | (668) | $ (668) |  |  |  | (668)
Redemption of vested employee restricted shares for tax withholding (in shares) |  | (28,900) |  |  |  |
Tax deficit on stock option exercises, expirations and restricted share vesting | (376) | $ (376) |  |  |  | (376)
Shares repurchased | (12,806) | $ (12,806) |  |  |  | $ (12,806)
Shares repurchased (in shares) |  | (477,292) |  |  |  | (477,292)
Share-based compensation expense for non-employees | 11 | $ 11 |  |  |  | $ 11
Equity transactions of noncontrolling interest |  |  |  |  | 25 | 25
BALANCE at Jan. 02, 2016 | 211,756 | $ 65,731 | 155,275 | (9,250) | (688) | 211,068
BALANCE (in shares) at Jan. 02, 2016 |  | 8,859,231 |  |  |  |
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |
Net income (loss) | 12,888 |  | 12,888 |  | 1,345 | 14,233
Foreign currency translation adjustment | (4,568) |  |  | (4,568) |  | (4,568)
Issuance of common stock | 44 | $ 44 |  |  |  | 44
Issuance of common stock (in shares) |  | 1,790 |  |  |  |
Exercise of stock options | 2,853 | $ 2,853 |  |  |  | $ 2,853
Exercise of stock options (in shares) |  | 124,931 |  |  |  | 124,931
Share-based compensation expense for employees | 6,716 | $ 6,716 |  |  |  | $ 6,716
Restricted shares vesting (in shares) |  | 201,905 |  |  |  |
Redemption of vested employee restricted shares for tax withholding | (1,880) | $ (1,880) |  |  |  | (1,880)
Redemption of vested employee restricted shares for tax withholding (in shares) |  | (69,000) |  |  |  |
Tax deficit on stock option exercises, expirations and restricted share vesting | (171) | $ (171) |  |  |  | (171)
Shares repurchased | (19,315) | $ (19,315) |  |  |  | $ (19,315)
Shares repurchased (in shares) |  | (784,867) |  |  |  | (783,703)
Share-based compensation expense for non-employees | 146 | $ 146 |  |  |  | $ 146
Accrued dividends on unvested shares | (83) |  | (83) |  |  | (83)
Cash dividends paid to stockholders | (1,166) |  | (1,166) |  |  | (1,166)
Equity transactions of noncontrolling interest |  |  |  |  | 6 | 6
BALANCE at Dec. 31, 2016 | 207,220 | $ 54,124 | 166,914 | (13,818) | 663 | $ 207,883
BALANCE (in shares) at Dec. 31, 2016 |  | 8,333,990 |  |  |  | 8,333,990
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |
Net income (loss) | 7,624 |  | 7,624 |  | 77 | $ 7,701
Foreign currency translation adjustment | 3,922 |  |  | 3,922 |  | 3,922
Issuance of common stock | 3,044 | $ 3,044 |  |  |  | 3,044
Issuance of common stock (in shares) |  | 89,312 |  |  |  |
Exercise of stock options | 6,420 | $ 6,420 |  |  |  | $ 6,420
Exercise of stock options (in shares) |  | 293,439 |  |  |  | 293,439
Share-based compensation expense for employees | 6,489 | $ 6,489 |  |  |  | $ 6,489
Restricted shares vesting (in shares) |  | 211,320 |  |  |  |
Redemption of vested employee restricted shares for tax withholding | (3,262) | $ (3,262) |  |  |  | (3,262)
Redemption of vested employee restricted shares for tax withholding (in shares) |  | (76,181) |  |  |  |
Cumulative effect of a change in accounting principle related to ASU 2016-09 | 48 |  | 48 |  |  | 48
Shares repurchased | (19,528) | $ (19,528) |  |  |  | $ (19,528)
Shares repurchased (in shares) |  | (554,708) |  |  |  | (554,708)
Share-based compensation expense for non-employees | 127 | $ 127 |  |  |  | $ 127
Distribution to noncontrolling interest |  |  |  |  | (419) | (419)
Accrued dividends on unvested shares | (134) |  | (134) |  |  | (134)
Cash paid on dividend equivalents | (121) |  | (121) |  |  | (121)
Cash dividends paid to stockholders | (4,941) |  | (4,941) |  |  | (4,941)
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

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