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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock | Accumulated Other Comprehensive Income/(Loss) | Retained Earnings | Noncontrolling Interest
--- | --- | --- | --- | --- | ---
Balance (in shares) at Sep. 30, 2017 |  | 65,137,000 |  |  |
Balance at Sep. 30, 2017 | $ 945,768 | $ 475,592 | $ (27,619) | $ 492,112 | $ 5,683
Increase (Decrease) in Shareholders' Equity |  |  |  |  |
Net income | 175,300 |  |  | 174,444 | 856
Foreign currency translation | (7,275) |  | (7,275) |  |
Cash dividends | (11,171) |  |  | (8,801) | (2,370)
Dividends on RSUs | 0 | $ 240 |  | (240) |
Purchases of common stock (in shares) |  | (1,012,000) |  |  |
Purchases of common stock | (62,614) |  |  | (62,614) |
Stock compensation expense | 15,713 | $ 15,713 |  |  |
Tax withholding related to RSU vesting | 183 | $ 183 |  |  |
RSUs vested (in shares) |  | 123,000 |  |  |
RSUs vested | 0 |  |  |  |
Acquisition of part of noncontrolling interest | (157) | $ 124 |  |  | (281)
Balance at Jun. 30, 2018 | 1,055,747 | $ 491,852 | (34,894) | 594,901 | 3,888
Balance (in shares) at Jun. 30, 2018 |  | 64,248,000 |  |  |
Balance (in shares) at Mar. 31, 2018 |  | 65,243,000 |  |  |
Balance at Mar. 31, 2018 | 1,066,328 | $ 487,385 | (24,435) | 599,630 | 3,748
Increase (Decrease) in Shareholders' Equity |  |  |  |  |
Net income | 60,242 |  |  | 59,861 | 381
Foreign currency translation | (10,459) |  | (10,459) |  |
Cash dividends | (3,177) |  |  | (2,936) | (241)
Dividends on RSUs | 0 | $ 78 |  | (78) |
Purchases of common stock (in shares) |  | (995,000) |  |  |
Purchases of common stock | (61,576) |  |  | (61,576) |
Stock compensation expense | 4,389 | $ 4,389 |  |  |
Balance at Jun. 30, 2018 | $ 1,055,747 | $ 491,852 | (34,894) | 594,901 | 3,888
Balance (in shares) at Jun. 30, 2018 |  | 64,248,000 |  |  |
Balance (in shares) at Sep. 30, 2018 | 64,371,000 | 64,371,000 |  |  |
Balance at Sep. 30, 2018 | $ 1,086,419 | $ 487,539 | (36,953) | 633,281 | 2,552
Increase (Decrease) in Shareholders' Equity |  |  |  |  |
Net income | 180,454 |  |  | 180,735 | (281)
Foreign currency translation | (4,157) |  | (4,157) |  |
Cash dividends | (50,521) |  |  | (47,936) | (2,585)
Dividends on RSUs |  | $ 1,225 |  | (1,225) |
Purchases of common stock (in shares) |  | (716,000) |  |  |
Purchases of common stock | (45,414) |  |  | (45,414) |
Stock compensation expense | 15,323 | $ 15,323 |  |  |
RSUs vested (in shares) |  | 156,000 |  |  |
RSUs vested | 0 |  |  |  |
Acquisition of part of noncontrolling interest | (687) | $ (903) |  |  | 216
Balance at Jun. 30, 2019 | $ 1,214,899 | $ 503,184 | (41,110) | 752,370 | 455
Balance (in shares) at Jun. 30, 2019 | 63,811,000 | 63,811,000 |  |  |
Balance (in shares) at Mar. 31, 2019 |  | 63,811,000 |  |  |
Balance at Mar. 31, 2019 | $ 1,167,581 | $ 498,269 | (39,136) | 705,824 | 2,624
Increase (Decrease) in Shareholders' Equity |  |  |  |  |
Net income | 62,965 |  |  | 62,898 | 67
Foreign currency translation | (1,974) |  | (1,974) |  |
Cash dividends | (18,405) |  |  | (15,953) | (2,452)
Dividends on RSUs | 0 | 399 |  | (399) |
Stock compensation expense | 5,419 | 5,419 |  |  |
Acquisition of part of noncontrolling interest | (687) | (903) |  |  | 216
Balance at Jun. 30, 2019 | $ 1,214,899 | $ 503,184 | $ (41,110) | $ 752,370 | $ 455
Balance (in shares) at Jun. 30, 2019 | 63,811,000 | 63,811,000 |  |  |

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