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Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Retained Earnings | Accumulated Other Comprehensive Income (Loss) | Treasury Stock
--- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Sep. 30, 2017 |  | 111,957,000 |  |  |  |
Balance at beginning of period at Sep. 30, 2017 | $ 4,164,591 | $ 11,196 | $ 487,248 | $ 3,855,686 | $ 2,300 | $ (191,839)
Beginning balance (in shares) at Sep. 30, 2017 |  |  |  |  |  | 3,353,000
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |
Net loss | 480,219 |  |  | 480,219 |  |
Other comprehensive income | 6,642 |  |  |  | 6,642 |
Dividends declared | (231,932) |  |  | (231,932) |  |
Exercise of employee stock options, net of shares withheld for employee taxes | 3,356 |  | (5,147) |  |  | $ 8,503
Exercise of employee stock options, net of shares withheld for employee taxes (in shares) |  | 1,000 |  |  |  | (152,000)
Vesting of restricted stock awards, net of shares withheld for employee taxes | (4,174) | $ 5 | (11,841) |  |  | $ 7,662
Vesting of restricted stock awards, net of shares withheld for employee taxes (in shares) |  | 51,000 |  |  |  | (136,000)
Stock-based compensation | 23,472 |  | 23,472 |  |  |
Cumulative effect adjustment for adoption of new accounting standard | ASU 2016-09 | 317 |  | 872 | (555) |  |
Ending balance (in shares) at Jun. 30, 2018 |  | 112,009,000 |  |  |  |
Balance at end of period at Jun. 30, 2018 | 4,442,491 | $ 11,201 | 494,604 | 4,103,418 | 8,942 | $ (175,674)
Ending balance (in shares) at Jun. 30, 2018 |  |  |  |  |  | 3,065,000
Beginning balance (in shares) at Mar. 31, 2018 |  | 112,009,000 |  |  |  |
Balance at beginning of period at Mar. 31, 2018 | 4,503,153 | $ 11,201 | 487,135 | 4,189,497 | (5,221) | $ (179,459)
Beginning balance (in shares) at Mar. 31, 2018 |  |  |  |  |  | 3,132,000
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |
Net loss | (8,008) |  |  | (8,008) |  |
Other comprehensive income | 14,163 |  |  |  | 14,163 |
Dividends declared | (78,071) |  |  | (78,071) |  |
Exercise of employee stock options, net of shares withheld for employee taxes | 3,414 |  | (84) |  |  | $ 3,498
Exercise of employee stock options, net of shares withheld for employee taxes (in shares) |  |  |  |  |  | (62,000)
Vesting of restricted stock awards, net of shares withheld for employee taxes | (86) |  | (373) |  |  | $ 287
Vesting of restricted stock awards, net of shares withheld for employee taxes (in shares) |  |  |  |  |  | (5,000)
Stock-based compensation | 7,926 |  | 7,926 |  |  |
Ending balance (in shares) at Jun. 30, 2018 |  | 112,009,000 |  |  |  |
Balance at end of period at Jun. 30, 2018 | $ 4,442,491 | $ 11,201 | 494,604 | 4,103,418 | 8,942 | $ (175,674)
Ending balance (in shares) at Jun. 30, 2018 |  |  |  |  |  | 3,065,000
Beginning balance (in shares) at Sep. 30, 2018 | 112,008,961 | 112,009,000 |  |  |  |
Balance at beginning of period at Sep. 30, 2018 | $ 4,382,735 | $ 11,201 | 500,393 | 4,027,779 | 16,550 | $ (173,188)
Beginning balance (in shares) at Sep. 30, 2018 | 3,015,243 |  |  |  |  | 3,015,000
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |
Net loss | $ (74,833) |  |  | (74,833) |  |
Other comprehensive income | 675 |  |  |  | 675 |
Dividends declared | (235,433) |  |  | (235,433) |  |
Exercise of employee stock options, net of shares withheld for employee taxes | 1,171 |  | (7,088) |  |  | $ 8,259
Exercise of employee stock options, net of shares withheld for employee taxes (in shares) |  |  |  |  |  | (147,000)
Vesting of restricted stock awards, net of shares withheld for employee taxes | (4,690) | $ 7 | (17,187) |  |  | $ 12,490
Vesting of restricted stock awards, net of shares withheld for employee taxes (in shares) |  | 71,000 |  |  |  | (221,000)
Stock-based compensation | 25,467 |  | 25,467 |  |  |
Reclassification of stranded tax effect for adoption of ASU No. 2018-02 (Note 2) | 0 |  |  | 4,239 | (4,239) |
Cumulative effect adjustment for adoption of new accounting standard | ASU 2014-09 | (38) |  |  | (38) |  |
Cumulative effect adjustment for adoption of new accounting standard | ASU 2016-01 | $ 0 |  |  | 29,071 | (29,071) |
Ending balance (in shares) at Jun. 30, 2019 | 112,080,262 | 112,080,000 |  |  |  |
Balance at end of period at Jun. 30, 2019 | $ 4,095,054 | $ 11,208 | 501,585 | 3,750,785 | (16,085) | $ (152,439)
Ending balance (in shares) at Jun. 30, 2019 | 2,647,064 |  |  |  |  | 2,647,000
Beginning balance (in shares) at Mar. 31, 2019 |  | 112,080,000 |  |  |  |
Balance at beginning of period at Mar. 31, 2019 | $ 4,318,620 | $ 11,208 | 493,421 | 3,979,708 | (12,072) | $ (153,645)
Beginning balance (in shares) at Mar. 31, 2019 |  |  |  |  |  | 2,668,000
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |
Net loss | (154,683) |  |  | (154,683) |  |
Other comprehensive income | 226 |  |  |  | 226 |
Dividends declared | (78,479) |  |  | (78,479) |  |
Exercise of employee stock options, net of shares withheld for employee taxes | 645 |  | (225) |  |  | $ 870
Exercise of employee stock options, net of shares withheld for employee taxes (in shares) |  |  |  |  |  | (15,000)
Vesting of restricted stock awards, net of shares withheld for employee taxes | (153) |  | (489) |  |  | $ 336
Vesting of restricted stock awards, net of shares withheld for employee taxes (in shares) |  |  |  |  |  | (6,000)
Stock-based compensation | 8,878 |  | 8,878 |  |  |
Reclassification of stranded tax effect for adoption of ASU No. 2018-02 (Note 2) | $ 0 |  |  | 4,239 | (4,239) |
Ending balance (in shares) at Jun. 30, 2019 | 112,080,262 | 112,080,000 |  |  |  |
Balance at end of period at Jun. 30, 2019 | $ 4,095,054 | $ 11,208 | $ 501,585 | $ 3,750,785 | $ (16,085) | $ (152,439)
Ending balance (in shares) at Jun. 30, 2019 | 2,647,064 |  |  |  |  | 2,647,000

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