The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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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
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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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The ceiling 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.

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Stock-Based Compensation (Stock Options By Exercise Price Range) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding	223,002	255,252	271,752
Weighted Average Remaining Contractual Life in Years	3 years 1 month 6 days
Weighted Average Exercise Price	$ 9.30	$ 9.63	$ 9.99
Options Outstanding, Aggregate Intrinsic Value	$ 370,153
Options Exercisable	223,002
Weighted Average Exercise Price	$ 9.30	$ 9.63
Options Exercisable, Aggregate Intrinsic Value	$ 370,153
$6.00 - 7.05 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$ 6.00
Exercise Price Range, Upper Range Limit	$ 7.05
Options Outstanding	77,252
Weighted Average Remaining Contractual Life in Years	3 years 4 months 24 days
Weighted Average Exercise Price	$ 6.20
Options Outstanding, Aggregate Intrinsic Value	$ 102,010
Options Exercisable	77,252
Weighted Average Exercise Price	$ 6.20
Options Exercisable, Aggregate Intrinsic Value	$ 102,010
$8.28 - 9.15 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$ 8.28
Exercise Price Range, Upper Range Limit	$ 9.15
Options Outstanding	70,750
Weighted Average Remaining Contractual Life in Years	4 years 2 months 12 days
Weighted Average Exercise Price	$ 8.28
Options Outstanding, Aggregate Intrinsic Value	$ 268,143
Options Exercisable	70,750
Weighted Average Exercise Price	$ 8.28
Options Exercisable, Aggregate Intrinsic Value	$ 268,143
$11.35 - 14.55 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$ 11.35
Exercise Price Range, Upper Range Limit	$ 14.55
Options Outstanding	75,000
Weighted Average Remaining Contractual Life in Years	1 year 8 months 12 days
Weighted Average Exercise Price	$ 13.45
Options Exercisable	75,000
Weighted Average Exercise Price	$ 13.45