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Stock Compensation Plans: Stock Options by Exercise Price (Details) - Stock Options shares in Thousands	3 Months Ended
	Dec. 31, 2016 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Number (shares) | shares	360,430
Options Outstanding, Weighed Average Exercise Price (dollars per share)	$ 9.94
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	7 years 7 months 6 days
Options Exercisable, Number (shares) | shares	138,480
Options Exercisable, Weighted Average Exercise Price (dollars per share)	$ 7.71
Options Exercisable, Weighted Average Remaining Contractual Life (Years)	6 years 4 months 24 days
$4.01 - $4.55
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Number (shares) | shares	22,500
Options Outstanding, Weighed Average Exercise Price (dollars per share)	$ 4.22
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	4 years 1 month 6 days
Options Exercisable, Number (shares) | shares	22,500
Options Exercisable, Weighted Average Exercise Price (dollars per share)	$ 4.22
Options Exercisable, Weighted Average Remaining Contractual Life (Years)	4 years 1 month 6 days
Weighted Average Exercise Price, minimum (dollars per share)	$ 4.01
Weighted Average Exercise Price, maximum (dollars per share)	$ 4.55
$5.86 - $6.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Number (shares) | shares	50,000
Options Outstanding, Weighed Average Exercise Price (dollars per share)	$ 5.93
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	5 years 9 months 18 days
Options Exercisable, Number (shares) | shares	38,200
Options Exercisable, Weighted Average Exercise Price (dollars per share)	$ 5.93
Options Exercisable, Weighted Average Remaining Contractual Life (Years)	5 years 9 months 18 days
Weighted Average Exercise Price, minimum (dollars per share)	$ 5.86
Weighted Average Exercise Price, maximum (dollars per share)	$ 6.00
$9.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Number (shares) | shares	86,000
Options Outstanding, Weighed Average Exercise Price (dollars per share)	$ 9.00
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	6 years 9 months 18 days
Options Exercisable, Number (shares) | shares	47,600
Options Exercisable, Weighted Average Exercise Price (dollars per share)	$ 9.00
Options Exercisable, Weighted Average Remaining Contractual Life (Years)	6 years 9 months 18 days
Weighted Average Exercise Price, minimum (dollars per share)	$ 9.00
$10.26 - $10.71
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Number (shares) | shares	146,180
Options Outstanding, Weighed Average Exercise Price (dollars per share)	$ 10.57
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	8 years 3 months 6 days
Options Exercisable, Number (shares) | shares	30,180
Options Exercisable, Weighted Average Exercise Price (dollars per share)	$ 10.56
Options Exercisable, Weighted Average Remaining Contractual Life (Years)	8 years 2 months 12 days
Weighted Average Exercise Price, minimum (dollars per share)	$ 10.26
Weighted Average Exercise Price, maximum (dollars per share)	$ 10.71
$15.67
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Number (shares) | shares	55,750
Options Outstanding, Weighed Average Exercise Price (dollars per share)	$ 15.67
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	9 years 8 months 12 days
Options Exercisable, Number (shares) | shares	0
Weighted Average Exercise Price, minimum (dollars per share)	$ 15.67

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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-Publisher FASB
-Name Accounting Standards Codification
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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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-Publisher FASB
-Name Accounting Standards Codification
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+ References

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-Publisher FASB
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-Publisher FASB
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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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-Publisher FASB
-Name Accounting Standards Codification
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