Stockholders' Equity	12 Months Ended
Sep. 30, 2017
Equity [Abstract]
Stockholders' Equity	5. Stockholders’ Equity Repurchase of Common Stock Shares are repurchased from time to time to support the Company’s stock-based compensation programs and to return capital to stockholders. The Company accounts for repurchases of common stock using the par value method. On November 5, 2014, the Company’s Board of Directors authorized it to repurchase up to $30.0 million of the Company’s outstanding common stock in open-market purchases, privately negotiated transactions, block trades, accelerated share repurchase transactions, tender offers or by any combination of such methods. The authorization has no fixed expiration date. As part of the accelerated share repurchase (“ASR”) program discussed below, the Company repurchased 758,143 shares of common stock on November 11, 2014 and 89,721 of common stock on July 8, 2015, the date that the ASR program was completed. On November 11, 2014, the Company entered into an ASR program with Wells Fargo Bank, National Association. In connection with this agreement, the Company made a $20.0 million payment to the bank and immediately received an initial delivery of 758,143 shares of its common stock with a fair value of $16.0 million as of the purchase date. Effective as of the date of the initial share purchase, the transaction was accounted for as a share retirement, resulting in a reduction of common stock of less than $0.1 million, additional paid-in capital of $2.5 million and retained earnings of $13.5 million. The remaining $4.0 million of the Company’s payment was also reported as a reduction in retained earnings. The specific number of shares that the Company ultimately purchased under the ASR agreement was based on the volume weighted average price of the Company’s common stock during the purchase period, less an agreed upon discount. In the aggregate the Company purchased 847,864 shares under the ASR program for an average price of $23.59 per share. Based on the facts associated with the agreement, the forward contract was indexed to the Company’s common stock and met the U.S. GAAP requirements to be classified as permanent equity as of July 8, 2015, the date the ASR was completed. On November 6, 2015, the Company’s Board of Directors authorized the repurchase of up to $20.0 million of the Company’s outstanding common stock in open-market purchases, privately negotiated transactions, block trades, accelerated share repurchase transactions, tender offers or by any combination of such methods. The authorization has no fixed expiration date. During fiscal 2017, we paid $4.7 million to repurchase 196,190 common shares in open market purchases at an average price of $23.97 per share. As of September 30, 2017, $25.3 million remained available to the Company for the purchase of its common stock under outstanding authorizations.

5. Stockholders’ Equity

Repurchase of Common Stock

Shares are repurchased from time to time to support the Company’s stock-based compensation programs and to return capital to stockholders. The Company accounts for repurchases of common stock using the par value method.

On November 5, 2014, the Company’s Board of Directors authorized it to repurchase up to $30.0 million of the Company’s outstanding common stock in open-market purchases, privately negotiated transactions, block trades, accelerated share repurchase transactions, tender offers or by any combination of such methods. The authorization has no fixed expiration date. As part of the accelerated share repurchase (“ASR”) program discussed below, the Company repurchased 758,143 shares of common stock on November 11, 2014 and 89,721 of common stock on July 8, 2015, the date that the ASR program was completed.

On November 11, 2014, the Company entered into an ASR program with Wells Fargo Bank, National Association. In connection with this agreement, the Company made a $20.0 million payment to the bank and immediately received an initial delivery of 758,143 shares of its common stock with a fair value of $16.0 million as of the purchase date. Effective as of the date of the initial share purchase, the transaction was accounted for as a share retirement, resulting in a reduction of common stock of less than $0.1 million, additional paid-in capital of $2.5 million and retained earnings of $13.5 million. The remaining $4.0 million of the Company’s payment was also reported as a reduction in retained earnings. The specific number of shares that the Company ultimately purchased under the ASR agreement was based on the volume weighted average price of the Company’s common stock during the purchase period, less an agreed upon discount. In the aggregate the Company purchased 847,864 shares under the ASR program for an average price of $23.59 per share. Based on the facts associated with the agreement, the forward contract was indexed to the Company’s common stock and met the U.S. GAAP requirements to be classified as permanent equity as of July 8, 2015, the date the ASR was completed.

On November 6, 2015, the Company’s Board of Directors authorized the repurchase of up to $20.0 million of the Company’s outstanding common stock in open-market purchases, privately negotiated transactions, block trades, accelerated share repurchase transactions, tender offers or by any combination of such methods. The authorization has no fixed expiration date. During fiscal 2017, we paid $4.7 million to repurchase 196,190 common shares in open market purchases at an average price of $23.97 per share. As of September 30, 2017, $25.3 million remained available to the Company for the purchase of its common stock under outstanding authorizations.