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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands | Total | Common Stock | Paid in Capital | Accumulated Deficit
--- | --- | --- | --- | ---
Beginning balance (in shares) at Sep. 30, 2015 |  | 32,661 |  |
Beginning balance at Sep. 30, 2015 | $ 630,423,000 | $ 33,000 | $ 857,553,000 | $ (227,163,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Net (loss) income | 4,693,000 |  |  | 4,693,000
Amortization of nonvested stock awards | 7,959,000 |  | 7,959,000 |
Shares issued under employee stock plans, net (in shares) |  | 491 |  |
Shares issued under employee stock plans, net | 0 | $ 0 | 0 |
Forfeiture of restricted stock (in shares) |  | (64) |  |
Forfeiture of restricted stock | 0 |  |  |
Common stock redeemed (in shares) |  | (17) |  |
Common stock redeemed | (222,000) |  | (222,000) |
Ending balance (in shares) at Sep. 30, 2016 |  | 33,071 |  |
Ending balance at Sep. 30, 2016 | 642,853,000 | $ 33,000 | 865,290,000 | (222,470,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Net (loss) income | 31,813,000 |  |  | 31,813,000
Amortization of nonvested stock awards | 8,164,000 |  | 8,164,000 |
Exercises of stock options (in shares) |  | 2 |  |
Exercises of stock options | 24,000 |  | 24,000 |
Shares issued under employee stock plans, net (in shares) |  | 536 |  |
Shares issued under employee stock plans, net | 1,000 | $ 1,000 |  |
Forfeiture of restricted stock (in shares) |  | (61) |  |
Forfeiture of restricted stock | 0 |  |  |
Common stock redeemed (in shares) |  | (32) |  |
Common stock redeemed | (415,000) |  | (415,000) |
Ending balance (in shares) at Sep. 30, 2017 |  | 33,516 |  |
Ending balance at Sep. 30, 2017 | 682,440,000 | $ 34,000 | 873,063,000 | (190,657,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Net (loss) income | (45,375,000) |  |  | (45,375,000)
Amortization of nonvested stock awards | 10,258,000 |  | 10,258,000 |
Exercises of stock options (in shares) |  | 8 |  |
Exercises of stock options | 64,000 |  | 64,000 |
Shares issued under employee stock plans, net (in shares) |  | 443 |  |
Forfeiture of restricted stock (in shares) |  | (216) |  |
Forfeiture of restricted stock | 0 |  |  |
Common stock redeemed (in shares) |  | (229) |  |
Common stock redeemed | (3,378,000) |  | (3,378,000) |
Other activity | 18,000 | $ 0 | 18,000 |
Ending balance (in shares) at Sep. 30, 2018 |  | 33,522 |  |
Ending balance at Sep. 30, 2018 | $ 644,027,000 | $ 34,000 | $ 880,025,000 | $ (236,032,000)

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