Stock-based Compensation (Details) - 2008 LTIP - USD ($)	1 Months Ended	3 Months Ended
Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Stock-based compensation
Shares authorized to be granted under stock compensation plan		2,000,000
Shares available for future awards under stock compensation plan		1,338,892
Stock Options
Shares
Outstanding at beginning of year (in shares)		540,625	90,625
Granted (in shares)			450,000
Outstanding at end of year (in shares)	540,625	540,625	540,625
Exercisable at end of year (in shares)	90,625	180,625	90,625
Weighted Average Exercise Price
Outstanding at beginning of the year (in dollars per share)		$ 2.18	$ 4.95
Granted price (in dollars per share)			1.62
Outstanding at end of year (in dollars per share)	$ 2.18	2.18	2.18
Exercisable at end of year (in dollars per share)	$ 4.95	$ 3.29	$ 4.95
Additional disclosures
Weighted Average Remaining Contractual Life		7 years 8 months 27 days	7 years 8 months 27 days
Weighted average remaining contractual term, options exercisable		5 years 5 months 9 days	3 years
Aggregate Intrinsic Value	$ 140,000	$ 86,000	$ 140,000
Aggregate Intrinsic Value (Exercisable)		17,000
Stock Options \| Senior Executive Officers
Stock-based compensation
Vesting period of stock award			5 years
Contractual term of option awards			10 years
Fair value of stock options			$ 194,000
Stock option per shares (in dollars per share)			$ 0.43
Volatility			27.36%
Risk free interest rate			1.21%
Expected option term			5 years
Dividend yield			0.00%
Stock based compensation expense		$ 10,000	$ 3,000
Shares
Granted (in shares)		0	450,000
Weighted Average Exercise Price
Exercised price (in dollars per share)			$ 1.62
Additional disclosures
Unrecognized compensation cost		$ 152,000
Period for recognizing unrecognized compensation cost		3 years 10 months 24 days
Restricted stock \| Chief Executive Officer
Stock-based compensation
Restricted stock award (in shares)	120,483
Stock based compensation expense		$ 26,000	$ 0
Additional disclosures
Unrecognized compensation cost		$ 119,000
Period for recognizing unrecognized compensation cost		1 year 2 months 1 day
Two-year period \| Restricted stock \| Chief Executive Officer
Stock-based compensation
Restricted stock award (in shares)	100,000
Vesting period of stock award	2 years
Three-year period \| Restricted stock \| Chief Executive Officer
Stock-based compensation
Restricted stock award (in shares)	20,483
Vesting period of stock award	3 years

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Fair value of options granted. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested options awarded to employees as compensation.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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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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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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Gross number of share options (or share units) granted during the period.

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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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Number of options outstanding, including both vested and non-vested options.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Expected term of share-based compensation awards, 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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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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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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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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