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v3.21.1

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands | Total | Cumulative Effect, Period of Adoption, Adjustment [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Other Comprehensive Earnings [Member] | Retained Earnings [Member] | Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member] | Treasury Stock [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Sep. 30, 2019 | $ 368,819 |  | $ 28 | $ 269,969 | $ (669) | $ 202,455 |  | $ (102,964)
Beginning Balance, Shares at Sep. 30, 2019 |  |  | 27,508,473 |  |  |  |  |
Net income | 9,059 |  |  |  |  | 9,059 |  |
Shares issued pursuant to employee stock purchase plan | 505 |  |  | 505 |  |  |  |
Shares issued pursuant to employee stock purchase plan, Shares |  |  | 38,352 |  |  |  |  |
Shares issued upon vesting of equity awards, net of minimum tax withholding | (476) |  |  | (476) |  |  |  |
Shares issued upon vesting of equity awards, net of minimum tax withholding, Shares |  |  | 123,993 |  |  |  |  |
Shares issued upon exercise of stock options | 111 |  |  | 111 |  |  |  |
Shares issued upon exercise of stock options, Shares |  |  | 13,000 |  |  |  |  |
Stock-based compensation | 1,513 |  |  | 1,513 |  |  |  |
Stock-based compensation, Shares |  |  | 2,946 |  |  |  |  |
Other comprehensive income | 606 |  |  |  | 606 |  |  |
Ending Balance at Dec. 31, 2019 | 380,747 |  | $ 28 | 271,622 | (63) | 212,124 |  | (102,964)
Ending Balance (Accounting Standards Update 2016-02 [Member]) at Dec. 31, 2019 |  | $ 610 |  |  |  |  | $ 610 |
Ending Balance, Shares at Dec. 31, 2019 |  |  | 27,686,764 |  |  |  |  |
Beginning Balance at Sep. 30, 2019 | 368,819 |  | $ 28 | 269,969 | (669) | 202,455 |  | (102,964)
Beginning Balance, Shares at Sep. 30, 2019 |  |  | 27,508,473 |  |  |  |  |
Net income | 14,124 |  |  |  |  |  |  |
Foreign currency translation adjustments | 156 |  |  |  |  |  |  |
Other comprehensive income | 156 |  |  |  |  |  |  |
Ending Balance at Mar. 31, 2020 | 387,077 |  | $ 28 | 273,809 | (513) | 217,189 |  | (103,436)
Ending Balance, Shares at Mar. 31, 2020 |  |  | 27,717,663 |  |  |  |  |
Beginning Balance at Dec. 31, 2019 | 380,747 |  | $ 28 | 271,622 | (63) | 212,124 |  | (102,964)
Beginning Balance, Shares at Dec. 31, 2019 |  |  | 27,686,764 |  |  |  |  |
Net income | 5,065 |  |  |  |  | 5,065 |  |
Purchase of treasury stock | (472) |  |  |  |  |  |  | (472)
Shares issued upon exercise of stock options | 414 |  |  | 414 |  |  |  |
Shares issued upon exercise of stock options, Shares |  |  | 28,167 |  |  |  |  |
Stock-based compensation | 1,773 |  |  | 1,773 |  |  |  |
Stock-based compensation, Shares |  |  | 2,732 |  |  |  |  |
Foreign currency translation adjustments | (450) |  |  |  | (450) |  |  |
Other comprehensive income | (450) |  |  |  |  |  |  |
Ending Balance at Mar. 31, 2020 | 387,077 |  | $ 28 | 273,809 | (513) | 217,189 |  | (103,436)
Ending Balance, Shares at Mar. 31, 2020 |  |  | 27,717,663 |  |  |  |  |
Beginning Balance at Sep. 30, 2020 | $ 455,397 |  | $ 28 | 280,436 | 829 | 277,699 |  | (103,595)
Beginning Balance, Shares at Sep. 30, 2020 | 28,130,312 |  | 28,130,312 |  |  |  |  |
Net income | $ 23,600 |  |  |  |  | 23,600 |  |
Shares issued pursuant to employee stock purchase plan | 740 |  |  | 740 |  |  |  |
Shares issued pursuant to employee stock purchase plan, Shares |  |  | 83,572 |  |  |  |  |
Shares issued upon vesting of equity awards, net of minimum tax withholding | (871) |  |  | (871) |  |  |  |
Shares issued upon vesting of equity awards, net of minimum tax withholding, Shares |  |  | 121,303 |  |  |  |  |
Shares issued upon exercise of stock options | 783 |  |  | 783 |  |  |  |
Shares issued upon exercise of stock options, Shares |  |  | 56,746 |  |  |  |  |
Stock-based compensation | 2,013 |  |  | 2,013 |  |  |  |
Stock-based compensation, Shares |  |  | 1,777 |  |  |  |  |
Other comprehensive income | 920 |  |  |  | 920 |  |  |
Ending Balance at Dec. 31, 2020 | 482,582 |  | $ 28 | 283,101 | 1,749 | 301,299 |  | (103,595)
Ending Balance, Shares at Dec. 31, 2020 |  |  | 28,393,710 |  |  |  |  |
Beginning Balance at Sep. 30, 2020 | $ 455,397 |  | $ 28 | 280,436 | 829 | 277,699 |  | (103,595)
Beginning Balance, Shares at Sep. 30, 2020 | 28,130,312 |  | 28,130,312 |  |  |  |  |
Net income | $ 62,535 |  |  |  |  |  |  |
Foreign currency translation adjustments | 83 |  |  |  |  |  |  |
Other comprehensive income | 276 |  |  |  |  |  |  |
Ending Balance at Mar. 31, 2021 | $ 523,304 |  | $ 28 | 285,532 | 1,105 | 340,234 |  | (103,595)
Ending Balance, Shares at Mar. 31, 2021 | 28,420,539 |  | 28,420,539 |  |  |  |  |
Beginning Balance at Dec. 31, 2020 | $ 482,582 |  | $ 28 | 283,101 | 1,749 | 301,299 |  | (103,595)
Beginning Balance, Shares at Dec. 31, 2020 |  |  | 28,393,710 |  |  |  |  |
Net income | 38,935 |  |  |  |  | 38,935 |  |
Shares issued upon vesting of equity awards, net of minimum tax withholding | (154) |  |  | (154) |  |  |  |
Shares issued upon vesting of equity awards, net of minimum tax withholding, Shares |  |  | 9,899 |  |  |  |  |
Shares issued upon exercise of stock options | 186 |  |  | 186 |  |  |  |
Shares issued upon exercise of stock options, Shares |  |  | 15,333 |  |  |  |  |
Stock-based compensation | 2,399 |  |  | 2,399 |  |  |  |
Stock-based compensation, Shares |  |  | 1,597 |  |  |  |  |
Foreign currency translation adjustments | (1,032) |  |  |  |  |  |  |
Other comprehensive income | (644) |  |  |  | (644) |  |  |
Ending Balance at Mar. 31, 2021 | $ 523,304 |  | $ 28 | $ 285,532 | $ 1,105 | $ 340,234 |  | $ (103,595)
Ending Balance, Shares at Mar. 31, 2021 | 28,420,539 |  | 28,420,539 |  |  |  |  |

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