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Condensed Consolidated Balance Sheets - Parenthetical (USD $)
In Thousands, except Share data, unless otherwise specified
Dec. 31, 2014
Sep. 30, 2014
Accounts receivable:    
Allowance for doubtful accounts $ 275us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 116us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Other non-current assets:    
Allowance for doubtful accounts $ 3,561us-gaap_AllowanceForDoubtfulAccountsReceivableNoncurrent $ 3,561us-gaap_AllowanceForDoubtfulAccountsReceivableNoncurrent
Shareholders’ equity:    
Preferred stock, par value (USD per share) $ 0.0001us-gaap_PreferredStockParOrStatedValuePerShare $ 0.0001us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock, shares authorized (in shares) 5,882,000us-gaap_PreferredStockSharesAuthorized 5,882,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued (in shares) 0us-gaap_PreferredStockSharesIssued 0us-gaap_PreferredStockSharesIssued
Preferred stock, shares outstanding (in shares) 0us-gaap_PreferredStockSharesOutstanding 0us-gaap_PreferredStockSharesOutstanding
Common stock, par value (USD per share) $ 0us-gaap_CommonStockParOrStatedValuePerShare $ 0us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized (in shares) 50,000,000us-gaap_CommonStockSharesAuthorized 50,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued (in shares) 31,653,000us-gaap_CommonStockSharesIssued 31,149,000us-gaap_CommonStockSharesIssued
Common stock, shares outstanding (in shares) 31,613,000us-gaap_CommonStockSharesOutstanding 31,109,000us-gaap_CommonStockSharesOutstanding
Treasury stock, shares held (in shares) 40,000us-gaap_TreasuryStockShares 40,000us-gaap_TreasuryStockShares