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Business Combinations - Pro Forma Results (Details) - Dayna International, LLC - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2017 | Mar. 31, 2016
Business Acquisition [Line Items] |  |  |  |
Revenue | $ 29,905 | $ 28,987 | $ 56,016 | $ 57,495
Net income | $ 979 | $ 821 | $ 1,303 | $ 426
Number of shares outstanding - basic (in shares) | $ 11,249,000 | $ 11,098,000 | $ 11,225,000 | $ 11,023,000
Number of shares outstanding - diluted (in shares) | 12,745,000 | 12,047,000 | 12,713,000 | 11,921,000
Basic earnings per share (in dollars per share) | 0.09 | 0.07 | 0.12 | 0.04
Diluted earnings per share (in dollars per share) | $ 0.08 | $ 0.07 | $ 0.10 | $ 0.04

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