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Stock-Based Compensation; Changes in Equity (Details 2)	9 Months Ended
	Sep. 30, 2017 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Options Outstanding (in shares) | shares	128,469
Weighted Average, Options Outstanding (in dollars per share) | $ / shares	$ 5.23
Remaining Life, Options Outstanding	1 year 3 months 18 days
Intrinsic Value, Options Outstanding (in dollars) | $	$ 0
Shares, Options Vested (in shares) | shares	100,788
Weighted Average, Options Vested (in dollars per share) | $ / shares	$ 5.21
Remaining Life, Option Vested	9 months 18 days
Intrinsic Value, Options Vested (in dollars) | $	$ 0
Stock Options By Grant Date Dec 2005 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Options Outstanding (in shares) | shares	0
Weighted Average, Options Outstanding (in dollars per share) | $ / shares	$ 0
Remaining Life, Options Outstanding	0 years
Intrinsic Value, Options Outstanding (in dollars) | $	$ 0
Shares, Options Vested (in shares) | shares	0
Weighted Average, Options Vested (in dollars per share) | $ / shares	$ 0
Remaining Life, Option Vested	0 years
Intrinsic Value, Options Vested (in dollars) | $	$ 0
Stock Options By Grant Date Dec 2010 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Options Outstanding (in shares) | shares	0
Weighted Average, Options Outstanding (in dollars per share) | $ / shares	$ 0
Remaining Life, Options Outstanding	0 years
Intrinsic Value, Options Outstanding (in dollars) | $	$ 0
Shares, Options Vested (in shares) | shares	0
Weighted Average, Options Vested (in dollars per share) | $ / shares	$ 0
Remaining Life, Option Vested	0 years
Intrinsic Value, Options Vested (in dollars) | $	$ 0
Stock Options By Grant Date Jan 2011 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Options Outstanding (in shares) | shares	0
Weighted Average, Options Outstanding (in dollars per share) | $ / shares	$ 0
Remaining Life, Options Outstanding	0 years
Intrinsic Value, Options Outstanding (in dollars) | $	$ 0
Shares, Options Vested (in shares) | shares	0
Weighted Average, Options Vested (in dollars per share) | $ / shares	$ 0
Remaining Life, Option Vested	0 years
Intrinsic Value, Options Vested (in dollars) | $	$ 0
Stock Options By Grant Date Nov 2012 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Options Outstanding (in shares) | shares	79,000
Weighted Average, Options Outstanding (in dollars per share) | $ / shares	$ 5.17
Remaining Life, Options Outstanding	2 months 12 days
Intrinsic Value, Options Outstanding (in dollars) | $	$ 0
Shares, Options Vested (in shares) | shares	79,000
Weighted Average, Options Vested (in dollars per share) | $ / shares	$ 5.17
Remaining Life, Option Vested	2 months 12 days
Intrinsic Value, Options Vested (in dollars) | $	$ 0
Stock Options By Grant Date Nov 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Options Outstanding (in shares) | shares	5,000
Weighted Average, Options Outstanding (in dollars per share) | $ / shares	$ 5.75
Remaining Life, Options Outstanding	1 year 1 month 6 days
Intrinsic Value, Options Outstanding (in dollars) | $	$ 0
Shares, Options Vested (in shares) | shares	4,000
Weighted Average, Options Vested (in dollars per share) | $ / shares	$ 5.75
Remaining Life, Option Vested	1 year 1 month 6 days
Intrinsic Value, Options Vested (in dollars) | $	$ 0
Stock Options By Grant Date Dec 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Options Outstanding (in shares) | shares	44,469
Weighted Average, Options Outstanding (in dollars per share) | $ / shares	$ 5.29
Remaining Life, Options Outstanding	3 years 3 months 18 days
Intrinsic Value, Options Outstanding (in dollars) | $	$ 0
Shares, Options Vested (in shares) | shares	17,788
Weighted Average, Options Vested (in dollars per share) | $ / shares	$ 5.27
Remaining Life, Option Vested	3 years 3 months 18 days
Intrinsic Value, Options Vested (in dollars) | $	$ 0

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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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.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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